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116-576: NERCO was an American mining company headquartered in Portland, Oregon , with interests in coal , natural gas , and oil . The company also had significant operations in gold and silver mining, and manufacture of gallium arsenide wafers. NERCO was created in 1977 by Pacific Power & Light Company (now PacifiCorp ) due to a change in United States federal law requiring the development of federal coal leases . From its origins in coal,

232-759: A box of trunk routes and major A roads. It is flanked to the east by the A6 road , which runs from Kendal to Penrith (though the National Park extension approved in 2015 is east of the A6); across its southern fringes by the A590 , which connects the M6 to Barrow-in-Furness, and the A5092 , and across its northern edge by the A66 trunk road between Penrith and Workington . The A595 (linking

348-465: A concern as well, and where enforced, modern practices have significantly improved safety in mines. Unregulated, poorly regulated or illegal mining , especially in developing economies , frequently contributes to local human rights violations and environmental conflicts . Mining can also perpetuate political instability through resource conflicts . Since the beginning of civilization, people have used stone , clay and, later, metals found close to

464-436: A further 200 days with some rain, and 145 completely dry days. Hill fog is common at any time of year, and the fells average only around 2.5 hours of sunshine per day, increasing to around 4.1 hours per day on the coastal plains. The Lake District is home to a great variety of wildlife, because of its varied topography, lakes, and forests. It provides a home for the red squirrel and colonies of sundew and butterwort , two of

580-468: A general " right to roam " in open country, which includes approximately 50% of the national park. Many of these tracks arose centuries ago and were used either as ridge highways (such as along High Street ) or as passes for travelling across the ridges between settlements in the valleys. Historically these paths were not planned for reaching summits, but more recently they are used by fell walkers for that purpose. The Coast to Coast Walk , which crosses

696-636: A hopper and a shaking screen or trommel which frees the desired minerals from the waste gravel. The minerals are then concentrated using sluices or jigs. Large drills are used to sink shafts, excavate stopes, and obtain samples for analysis. Trams are used to transport miners, minerals and waste. Lifts carry miners into and out of mines, and move rock and ore out, and machinery in and out, of underground mines. Huge trucks, shovels and cranes are employed in surface mining to move large quantities of overburden and ore. Processing plants use large crushers, mills, reactors, roasters and other equipment to consolidate

812-883: A mass of actual rock. Both types of ore deposit, placer or lode, are mined by both surface and underground methods. Some mining, including much of the rare earth elements and uranium mining , is done by less-common methods, such as in-situ leaching : this technique involves digging neither at the surface nor underground. The extraction of target minerals by this technique requires that they be soluble, e.g., potash , potassium chloride , sodium chloride , sodium sulfate , which dissolve in water. Some minerals, such as copper minerals and uranium oxide , require acid or carbonate solutions to dissolve. Explosives in Mining Explosives have been used in surface mining and sub-surface mining to blast out rock and ore intended for processing. The most common explosive used in mining

928-426: A mining operation. Once the analysis determines a given ore body is worth recovering, development begins to create access to the ore body. The mine buildings and processing plants are built, and any necessary equipment is obtained. The operation of the mine to recover the ore begins and continues as long as the company operating the mine finds it economical to do so. Once all the ore that the mine can produce profitably

1044-503: A more sustainable future, the demand for metals is set to skyrocket. Between 2022 and 2050, an estimated 7 billion metric tons of metals will need to be extracted. Steel will account for the largest portion of this total at 5 billion tons, followed by aluminum at 950 million tons, copper at 650 million tons, graphite at 170 million tons, nickel at 100 million tons, and other metals. Notably, the energy expenditure required to extract these metals will soon surpass that of coal mining, highlighting

1160-408: A strong inducement to extract these metals or to lease the deposits and collect royalties from mine operators. English, German , and Dutch capital combined to finance extraction and refining . Hundreds of German technicians and skilled workers were brought over; in 1642 a colony of 4,000 foreigners was mining and smelting copper at Keswick in the northwestern mountains. Use of water power in

1276-430: A system of permits operates on Gatescarth Pass . Most of the land within the national park is in private ownership, with about 55% registered as agricultural land. Landowners include: The Lake District is a roughly circular upland massif , deeply dissected by a broadly radial pattern of major valleys which are largely the result of repeated glaciations over the last 2 million years. The apparent radial pattern

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1392-588: Is ammonium nitrate . Between 1870 and 1920, in Queensland Australia, an increase in mining accidents lead to more safety measures surrounding the use of explosives for mining. In the United States of America, between 1990 and 1999, about 22.3 billion kilograms of explosives were used in mining quarrying and other industries; Moreover " coal mining used 66.4%, nonmetal mining and quarrying 13.5%, metal mining 10.4%, construction 7.1%, and all other users 2.6%". Artisanal and small-scale mining (ASM)

1508-433: Is England's deepest lake. The Central Fells are lower in elevation than surrounding areas of fell, peaking at 762 m (2,500 ft) at High Raise . They take the form of a ridge running between Derwent Water in the west and Thirlmere in the east, from Keswick in the north to Langdale Pikes in the south. A spur extends southeast to Loughrigg Fell above Ambleside. The central ridge running north over High Seat

1624-811: Is a blanket term for a type of subsistence mining involving a miner who may or may not be officially employed by a mining company but works independently, mining minerals using their own resources, usually by hand. While there is no completely coherent definition for ASM, artisanal mining generally includes miners who are not officially employed by a mining company and use their own resources to mine. As such, they are part of an informal economy . ASM also includes, in small-scale mining, enterprises or individuals that employ workers for mining, but who generally still use similar manually-intensive methods as artisanal miners (such as working with hand tools). In addition, ASM can be characterized as distinct from large-scale mining (LSM) by less efficient extraction of pure minerals from

1740-519: Is called by that name, Bassenthwaite Lake . All the others such as Windermere , Coniston Water , Ullswater and Buttermere are meres, tarns and waters, with mere being the least common and water being the most common. The major lakes and reservoirs in the National Park are given below. Below the tree line are wooded areas, including British and European native oak woodlands and introduced softwood plantations. The woodlands provide habitats for native English wildlife. The native red squirrel

1856-506: Is dependent on investment, labor, energy, refining, and transportation cost. Mining operations can create a negative environmental impact, both during the mining activity and after the mine has closed. Hence, most of the world's nations have passed regulations to decrease the impact; however, the outsized role of mining in generating business for often rural, remote or economically depressed communities means that governments often fail to fully enforce such regulations. Work safety has long been

1972-476: Is done by removing surface vegetation, dirt, and bedrock to reach buried ore deposits. Techniques of surface mining include: open-pit mining , which is the recovery of materials from an open pit in the ground; quarrying , identical to open-pit mining except that it refers to sand, stone and clay; strip mining , which consists of stripping surface layers off to reveal ore underneath; and mountaintop removal , commonly associated with coal mining, which involves taking

2088-528: Is exceptionally boggy. The Eastern Fells consist of a long north-to-south ridge , the Helvellyn range , running from Clough Head to Seat Sandal with the 950 m (3,118 ft) Helvellyn at its highest point. The western slopes of these summits tend to be grassy, with rocky corries and crags on the eastern side. The Fairfield group lies to the south of the range and forms a similar pattern with towering rock faces and hidden valleys spilling into

2204-531: Is found in the Lake District and a few other parts of England. In parts of the Lake District, the rainfall is higher than in any other part of England. This gives Atlantic mosses , ferns , lichen , and liverworts the chance to grow. There is some ancient woodland in the National Park. Management of the woodlands varies: some are coppiced , some pollarded , some left to grow naturally, and some provide grazing and shelter. The Lake District extends to

2320-613: Is mining upward, creating a sloping underground room, long wall mining , which is grinding a long ore surface underground, and room and pillar mining, which is removing ore from rooms while leaving pillars in place to support the roof of the room. Room and pillar mining often leads to retreat mining , in which supporting pillars are removed as miners retreat, allowing the room to cave in, thereby loosening more ore. Additional sub-surface mining methods include hard rock mining , bore hole mining, drift and fill mining, long hole slope mining, sub level caving, and block caving . Heavy machinery

2436-484: Is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) in the United States, including 98% of metallic ores. Targets are divided into two general categories of materials: placer deposits , consisting of valuable minerals contained within river gravels, beach sands, and other unconsolidated materials ; and lode deposits , where valuable minerals are found in veins, in layers, or in mineral grains generally distributed throughout

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2552-577: Is not from a central dome, but from an axial watershed extending from St Bees Head in the west to Shap in the east. Most of these valleys display the U-shaped cross-section characteristic of glacial origin and often contain long narrow lakes in bedrock hollows, with tracts of relatively flat ground at their infilled heads, or where they are divided by lateral tributaries (Buttermere-Crummock Water; Derwent Water-Bassenthwaite Lake). Smaller lakes known as tarns occupy glacial cirques at higher elevations. It

2668-413: Is not of immediate interest to the miner. The total movement of ore and waste constitutes the mining process. Often more waste than ore is mined during the life of a mine, depending on the nature and location of the ore body. Waste removal and placement is a major cost to the mining operator, so a detailed characterization of the waste material forms an essential part of the geological exploration program for

2784-546: Is now the Scottish border during the Caledonian orogeny . The northern central peaks, such as Great Rigg, were produced by considerable lava flows. These lava eruptions were followed by a series of pyroclastic eruptions which produced a series of calderas, one of which includes present-day Scafell Pike. These pyroclastic rocks give rise to the craggy landscapes typical of the central fells. The southeastern band comprises

2900-584: Is recovered, reclamation can begin, to make the land used by the mine suitable for future use. Technical and economic challenges notwithstanding, successful mine development must also address human factors. Working conditions are paramount to success, especially with regard to exposures to dusts, radiation, noise, explosives hazards, and vibration, as well as illumination standards. Mining today increasingly must address environmental and community impacts, including psychological and sociological dimensions. Thus, mining educator Frank T. M. White (1909–1971), broadened

3016-510: Is the abundance of both which has led to the area becoming known as the Lake District. Many of the higher fells are rocky, while moorland predominates lower down. Vegetation cover in better-drained areas includes bracken and heather , although much of the land is boggy , due to the high rainfall. Deciduous native woodland occurs on many of the steeper slopes below the tree line , but with native oak supplemented by extensive conifer plantations in many areas, particularly Grizedale Forest in

3132-524: Is the deepest lake in England. The Lake District National Park was established in 1951, and covers an area of 2,362 km (912 square miles), the bulk of the region. It was designated a UNESCO World Heritage Site in 2017. The Lake District National Park includes all of the central Lake District, though the town of Kendal , some coastal areas and the Cartmel and Furness peninsulas are outside

3248-595: Is the largest of the thirteen national parks in England and Wales and the second largest in the UK after the Cairngorms National Park . Its aim is to protect the landscape by restricting unwelcome change by industry or commerce. The area of the national park, with the exception of the 2016 extension, was designated a World Heritage Site in 2017 as a cultural landscape . This was the fourth attempt to list

3364-656: Is the largest producer of diamonds in Africa, with an estimated 12 million carats in 2019. Other types of mining reserves in Africa include cobalt , bauxite , iron ore , coal, and copper . Gold and coal mining started in Australia and New Zealand in the 19th century. Nickel has become important in the economy of New Caledonia . In Fiji , in 1934, the Emperor Gold Mining Company Ltd. established operations at Vatukoula , followed in 1935 by

3480-423: Is to conduct a feasibility study to evaluate the financial viability, the technical and financial risks, and the robustness of the project. This is when the mining company makes the decision whether to develop the mine or to walk away from the project. This includes mine planning to evaluate the economically recoverable portion of the deposit, the metallurgy and ore recoverability, marketability and payability of

3596-419: Is used in mining to explore and develop sites, to remove and stockpile overburden, to break and remove rocks of various hardness and toughness, to process the ore, and to carry out reclamation projects after the mine is closed. Bulldozers, drills, explosives and trucks are all necessary for excavating the land. In the case of placer mining , unconsolidated gravel, or alluvium , is fed into machinery consisting of

NERCO - Misplaced Pages Continue

3712-677: The B5343 . Other valleys such as Little Langdale , Eskdale and Dunnerdale are served by minor roads. The last of these is connected with the first two by the Wrynose and Hardknott passes respectively; both of these passes are known for their steep gradients and are together one of the most popular climbs in the United Kingdom for cycling enthusiasts. A minor road through the Newlands Valley connects via Newlands Hause with

3828-569: The Furness Fells or Coniston Fells, have as their northern boundary the steep and narrow Hardknott and Wrynose passes. The highest are Old Man of Coniston and Swirl How which slightly exceed 800 m (2,600 ft). The third group to the west of the Duddon includes Harter Fell and the long ridge leading over Whitfell to Black Combe and the sea. The south of this region consists of lower forests and knolls, with Kirkby Moor on

3944-521: The Greek author Diodorus Siculus , who mentions fire-setting as one method used to break down the hard rock holding the gold . One of the complexes is shown in one of the earliest known mining maps. The miners crushed the ore and ground it to a fine powder before washing the powder for the gold dust known as the dry and wet attachment processes. Mining in Europe has a very long history. Examples include

4060-641: The Kirkstone Pass . Some valleys which are not penetrated by A roads are served by B roads . The B5289 serves Lorton Vale and Buttermere and links via the Honister Pass with Borrowdale . The B5292 ascends the Whinlatter Pass from Lorton Vale before dropping down to Braithwaite near Keswick. The B5322 serves the valley of St John's in the Vale whilst Great Langdale is served by

4176-534: The Lake Poets . The Cumbrian mountains, or fells , include England's highest : Scafell Pike (978 m; 3,209 ft), Helvellyn (950 m; 3,120 ft) and Skiddaw (931 m; 3,054 ft). The region also contains sixteen major lakes. They include Windermere , which with a length of 11 miles (18 km) and an area of 5.69 square miles (14.73 km ) is the longest and largest lake in England, and Wast Water , which at 79 metres (259 ft)

4292-582: The Leven Estuary , and the western banks and tidal flats of the Kent Estuary . These areas are each characterised by sand and mudflats of scenic and wildlife interest. The coast is backed by extensive flats of raised marine deposits left when the relative sea level was higher. The Lake District's geology is very complex but well-studied. A granite batholith beneath the area is responsible for this upland massif, its relatively low density causing

4408-598: The Patterdale valley. It culminates in the height of Red Screes overlooking the Kirkstone Pass . The Far Eastern Fells refers to all of the Lakeland fells to the east of Ullswater and the A592 road running south to Windermere. At 828 m (2,717 ft), the peak known as High Street is the highest point on a complex ridge that runs broadly north-south and overlooks the hidden valley of Haweswater to its east. In

4524-490: The Secretary of State for Environment, Food, and Rural Affairs . The precise extent of the Lake District is undefined, but it is sometimes considered to be slightly larger than that of the National Park, whose total area is about 2,362 square kilometres (912 sq mi). The park extends just over 51 kilometres (32 mi) from east to west and nearly 64 kilometres (40 mi) from north to south, with areas such as

4640-623: The Skiddaw Group and include the rocks traditionally known as the Skiddaw Slates . Their friability generally leads to mountains with relatively smooth slopes such as Skiddaw itself. The central band is a mix of volcanic and sedimentary rocks of mid-to-late Ordovician age comprising the lavas and tuffs of the Borrowdale Volcanic Group , erupted as the former Iapetus Ocean was subducted beneath what

4756-517: The argentiferous galena in the mines of Cartagena ( Cartago Nova ), Linares ( Castulo ), Plasenzuela and Azuaga , among many others. Spain was one of the most important mining regions, but all regions of the Roman Empire were exploited. In Great Britain the natives had mined minerals for millennia , but after the Roman conquest , the scale of the operations increased dramatically, as

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4872-836: The greenstone of the Langdale axe industry based in the English Lake District . The oldest-known mine on archaeological record is the Ngwenya Mine in Eswatini (Swaziland) , which radiocarbon dating shows to be about 43,000 years old. At this site Paleolithic humans mined hematite to make the red pigment ochre . Mines of a similar age in Hungary are believed to be sites where Neanderthals may have mined flint for weapons and tools. Ancient Egyptians mined malachite at Maadi . At first, Egyptians used

4988-526: The "Cumbrian Mountains", "Cumbrian Fells" or "Lakeland Fells". The four highest fells exceed 3,000 feet (914 m). These are: The Northern Fells are a clearly defined range of hills contained within a 13 km (8 mi) diameter circle between Keswick in the southwest and Caldbeck in the northeast. They culminate in the 931 m (3,054 ft) peak of Skiddaw . Other notable peaks are Blencathra (also known as Saddleback) (868 m (2,848 ft)) and Carrock Fell . Bassenthwaite Lake occupies

5104-509: The 21st century begins, a globalized mining industry of large multinational corporations has arisen. Peak minerals and environmental impacts have also become a concern. Different elements, particularly rare-earth minerals , have begun to increase in demand as a result of new technologies. In 2023, 8.5 billion metric tons of coal were extracted from the Earth's crust. However, as the global economy transitions away from fossil fuels and toward

5220-680: The 7th century to the 14th century. Gold was often traded to Mediterranean economies that demanded gold and could supply salt , even though much of Africa was abundant with salt due to the mines and resources in the Sahara desert . The trading of gold for salt was mostly used to promote trade between the different economies. Since the Great Trek in the 19th century, after, gold and diamond mining in Southern Africa has had major political and economic impacts. The Democratic Republic of Congo

5336-683: The A66 with the A5092) forms the park boundary from Calder Bridge to Holmrook, then crosses the coastal plain of the park until turning inland at the Whicham Valley, forming much of the park boundary again until joining the A5092 at Grizebeck. Besides these, a few A roads penetrate the area itself, notably the A591 which runs north-westwards from Kendal to Windermere and then on to Keswick. It continues up

5452-589: The B5289 at Buttermere. Wasdale is served by a cul-de-sac minor road, as is Longsleddale and the valleys at Haweswater and Kentmere . There are networks of minor roads in the lower-lying southern part of the area, connecting numerous communities between Kendal, Windermere, and Coniston. The West Coast Main Line skirts the eastern edge of the Lake District and the Cumbrian Coast Line passes through

5568-524: The Earth's surface. These were used to make early tools and weapons; for example, high quality flint found in northern France , southern England and Poland was used to create flint tools . Flint mines have been found in chalk areas where seams of the stone were followed underground by shafts and galleries. The mines at Grimes Graves and Krzemionki are especially famous, and like most other flint mines, are Neolithic in origin (c. 4000–3000 BC). Other hard rocks mined or collected for axes included

5684-675: The French crown to operate mines in 1733, becoming "the first practical miner on Lake Superior"; seven years later, mining was halted by an outbreak between Sioux and Chippewa tribes. Mining in the United States became widespread in the 19th century, and the United States Congress passed the General Mining Act of 1872 to encourage mining of federal lands. As with the California Gold Rush in

5800-699: The Lake District Peninsulas to the south lying outside the National Park. There are only a few major settlements within this mountainous area: the towns of Keswick ; Windermere and Bowness-on-Windermere (which are contiguous); and Ambleside, are the three largest. The economies of all these are heavily dependent on tourism. Significant settlements close to the boundary of the national park include Carlisle , Barrow-in-Furness , Kendal , Ulverston , Dalton-in-Furness , Whitehaven , Workington , Cockermouth , Penrith , Millom and Grange-over-Sands ; each of these has important economic links with

5916-520: The Lake District is generally very windy: the coastal areas have 20 days of gales, and the fell tops around 100 days of gales per year. The maritime climate means that the Lake District has relatively moderate temperature variations throughout the year. The mean temperature in the valleys ranges from about 3 °C (37 °F) in January to around 15 °C (59 °F) in July. (By comparison, Moscow , at

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6032-440: The Lake District. They can be regarded as comprising a northern grouping between Wasdale, Eskdale, and the two Langdale valleys, a southeastern group east of Dunnerdale and south of Little Langdale, and a southwestern group bounded by Eskdale to the north and Dunnerdale to the east. The first group includes England's highest mountains: Scafell Pike in the centre, at 978 m (3,209 ft) and Scafell one mile (1.6 km) to

6148-643: The Loloma Gold Mines, N.L., and then by Fiji Mines Development Ltd. (aka Dolphin Mines Ltd.). These developments ushered in a “mining boom”, with gold production rising more than a hundred-fold, from 931.4 oz in 1934 to 107,788.5 oz in 1939, an order of magnitude then comparable to the combined output of New Zealand and Australia's eastern states. During prehistoric times, early Americans mined large amounts of copper along Lake Superior 's Keweenaw Peninsula and in nearby Isle Royale ; metallic copper

6264-481: The Romans needed Britannia 's resources, especially gold , silver , tin , and lead . Roman techniques were not limited to surface mining. They followed the ore veins underground once opencast mining was no longer feasible. At Dolaucothi they stoped out the veins and drove adits through bare rock to drain the stopes. The same adits were also used to ventilate the workings, especially important when fire-setting

6380-598: The Spanish to pulverize ore after being mined. This device was powered by animals and used the same principles used for grain threshing . Much of the knowledge of medieval mining techniques comes from books such as Biringuccio 's De la pirotechnia and probably most importantly from Georg Agricola 's De re metallica (1556). These books detail many different mining methods used in German and Saxon mines. A prime issue in medieval mines, which Agricola explains in detail,

6496-756: The Umm el-Sawwan site; gypsum was used to make funerary items for private tombs. Other minerals mined in Egypt from the Old Kingdom (2649-2134 BC) until the Roman Period (30 BC-AD 395) including granite , sandstone , limestone , basalt , travertine , gneiss , galena , and amethyst . Mining in Egypt occurred in the earliest dynasties. The gold mines of Nubia were among the largest and most extensive of any in Ancient Egypt. These mines are described by

6612-545: The area to be "buoyed up". The granite can be seen at the surface as the Ennerdale, Skiddaw, Carrock Fell, Eskdale, and Shap granites. Broadly speaking the area can be divided into three bands, divisions which run southwest to the northeast. Generally speaking, the rocks become younger from the northwest to the southeast. The northwestern band is composed of early to mid- Ordovician sedimentary rocks , largely mudstones and siltstones of marine origin. Together they comprise

6728-576: The area, which consists of the High Stile ridge north of Ennerdale, the Loweswater Fells in the far northwest, the Pillar group in the southwest, and Great Gable (899 m (2,949 ft)) near Sty Head. Other tops include Seatallan , Haystacks and Kirk Fell . This area is craggy and steep, with the impressive pinnacle of Pillar Rock its showpiece. Wastwater , located in this part,

6844-410: The area. Other villages are Coniston , Threlkeld , Glenridding , Pooley Bridge , Broughton-in-Furness , Grasmere , Newby Bridge , Staveley , Lindale , Gosforth and Hawkshead . Beyond these are a scattering of hamlets and many isolated farmsteads, some of which are still tied to agriculture; others now function as part of the tourist economy. The Lake District is very nearly contained within

6960-548: The boundaries of the national park (and additionally Drigg , about a third of a mile from the park boundary). The line gives railway enthusiasts and others a flavour of a pre- Beeching railway line, with features like manually operated level crossing gates, as well as giving a good connection to the steam railway into Eskdale and providing access for cyclists and serious walkers to the Western Fells. The narrow gauge Ravenglass and Eskdale Railway runs from Ravenglass on

7076-528: The bright green malachite stones for ornamentations and pottery . Later, between 2613 and 2494 BC, large building projects required expeditions abroad to the area of Wadi Maghareh in order to secure minerals and other resources not available in Egypt itself. Quarries for turquoise and copper were also found at Wadi Hammamat , Tura , Aswan and various other Nubian sites on the Sinai Peninsula and at Timna . Quarries for gypsum were found at

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7192-615: The coast of the Irish Sea from Drigg in the north to Silecroft in the south, encompassing the estuaries of the Esk and its tributaries, the Irt and the Mite . The intertidal zone of the combined estuaries includes sand, shingle and mudflats, and saltmarsh . The dune systems on either side of the estuary are protected as nature reserves; Drigg Dunes and Gullery to the north and Eskmeals Dunes to

7308-574: The company expanded into other mining ventures, including an unsuccessful foray into uranium mining. In August 1984, the company went public, selling 10% of its shares and trading on the New York Stock Exchange . By 1992, the company had grown to $ 920 million in annual revenues and employed 2,200. NERCO was included in the Fortune 500 list of major American companies from 1985 to 1993, peaking at number 353 in 1992. In 1993, NERCO

7424-417: The cutter-head is progressively launched further into the coal seam. High wall mining can produce thousands of tons of coal in contour-strip operations with narrow benches, previously mined areas, trench mine applications and steep-dip seams. Sub-surface mining consists of digging tunnels or shafts into the earth to reach buried ore deposits. Ore, for processing, and waste rock, for disposal, are brought to

7540-646: The east side of Bassenthwaite Lake . "The A591, Grasmere, Lake District" was short-listed in the 2011 Google Street View awards in the Most Romantic Street category. The A593 and A5084 link the Ambleside and Coniston areas with the A590 to the south whilst the A592 and A5074 similarly link Windermere with the A590. The A592 also continues northwards from Windermere to Ullswater and Penrith by way of

7656-534: The edges of these Ordovician and Silurian rocks on the northern, eastern, and southern fringes of the area is a semi-continuous outcrop of Carboniferous Limestone seen most spectacularly at places like Whitbarrow Scar and Scout Scar . The Lake District's location on the northwest coast of England, coupled with its mountainous geography, makes it the wettest part of England. The UK Met Office reports average annual precipitation of more than 2,000 mm (80 in), but with considerable local variation. Although

7772-452: The entire region receives above-average rainfall, there is a wide disparity between the amounts of rainfall in the western and eastern lakes, as the Lake District experiences relief rainfall . Seathwaite, Borrowdale is the wettest inhabited place in England with an average of 3,300 mm (130 in) of rain a year, while nearby Sprinkling Tarn is even wetter, recording over 5,000 mm (200 in) per year; by contrast, Keswick, at

7888-698: The focus to the “total environment of mining”, including reference to community development around mining, and how mining is portrayed to an urban society, which depends on the industry, although seemingly unaware of this dependency. He stated, “[I]n the past, mining engineers have not been called upon to study the psychological, sociological and personal problems of their own industry – aspects that nowadays are assuming tremendous importance. The mining engineer must rapidly expand his knowledge and his influence into these newer fields.” Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining . Today, surface mining

8004-487: The form of water mills was extensive. The water mills were employed in crushing ore, raising ore from shafts, and ventilating galleries by powering giant bellows . Black powder was first used in mining in Selmecbánya , Kingdom of Hungary (now Banská Štiavnica , Slovakia) in 1627. Black powder allowed blasting of rock and earth to loosen and reveal ore veins. Blasting was much faster than fire-setting and allowed

8120-716: The generally lower southern part of the area. The Lake District extends to the sea to the west and south. The highest mountain in England, Scafell Pike (978 m or 3209 feet), has a far-reaching view on a clear day, ranging from the Galloway Hills of Scotland, the Mourne Mountains in Northern Ireland, the Isle of Man, and Snowdonia in Wales. The mountains (or ' fells ') of the Lake District are known as

8236-400: The growing importance of sustainable metal extraction practices. The process of mining from discovery of an ore body through extraction of minerals and finally to returning the land to its natural state consists of several distinct steps. The first is discovery of the ore body, which is carried out through prospecting or exploration to find and then define the extent, location and value of

8352-537: The head of Windermere - Grasmere, Great Langdale and Little Langdale, and the Coniston Water valley. The valleys break the mountains up into blocks, which have been described by various authors in different ways. The most frequently encountered approach is that made popular by Alfred Wainwright who published seven separate area guides to the Lakeland Fells. Only one of the lakes in the Lake District

8468-465: The lower end of Borrowdale , receives 1,470 mm (58 in) every year, and Penrith (just outside the Lake District) only 870 mm (34 in). March to June tend to be the driest months, with October to January the wettest, but at low levels, there is relatively little difference between months. Although there are gales in the sheltered valleys on only five days a year on average,

8584-535: The metals due to the difficulties of transporting them, but the copper was eventually traded throughout the continent along major river routes. In the early colonial history of the Americas, "native gold and silver was quickly expropriated and sent back to Spain in fleets of gold- and silver-laden galleons", the gold and silver originating mostly from mines in Central and South America. Turquoise dated at 700 AD

8700-768: The mid-19th century, mining for minerals and precious metals, along with ranching , became a driving factor in the U.S. Westward Expansion to the Pacific coast. With the exploration of the West, mining camps sprang up and "expressed a distinctive spirit, an enduring legacy to the new nation"; Gold Rushers would experience the same problems as the Land Rushers of the transient West that preceded them. Aided by railroads, many people traveled West for work opportunities in mining. Western cities such as Denver and Sacramento originated as mining towns. When new areas were explored, it

8816-442: The mid-sixteenth century. On the continent, mineral deposits belonged to the crown, and this regalian right was stoutly maintained. But in England, royal mining rights were restricted to gold and silver (of which England had virtually no deposits) by a judicial decision of 1568 and a law in 1688. England had iron , zinc , copper , lead , and tin ores. Landlords who owned the base metals and coal under their estates then had

8932-432: The minehead, where the water was stored in large reservoirs and tanks. When a full tank was opened, the flood of water sluiced away the overburden to expose the bedrock underneath and any gold-bearing veins. The rock was then worked by fire-setting to heat the rock, which would be quenched with a stream of water. The resulting thermal shock cracked the rock, enabling it to be removed by further streams of water from

9048-590: The mineral-rich material and extract the desired compounds and metals from the ore. English Lake District The Lake District , also known as the Lakes or Lakeland , is a mountainous region and national park in Cumbria , North West England . It is famous for its landscape, including its lakes, coast, and the Cumbrian mountains , and for its literary associations with Beatrix Potter , John Ruskin , and

9164-431: The mining of previously impenetrable metals and ores. In 1762, one of the world's first mining academies was established in the same town there. The widespread adoption of agricultural innovations such as the iron plowshare , as well as the growing use of metal as a building material, was also a driving force in the tremendous growth of the iron industry during this period. Inventions like the arrastra were often used by

9280-564: The mudstones and wackes of the Windermere Supergroup and which includes (successively) the rocks of the Dent, Stockdale, Tranearth, Coniston, and Kendal groups. These are generally a little less resistant to erosion than the sequence of the rock to the north and underlie much of the lower landscapes around Coniston and Windermere. Later intrusions have formed individual outcrops of igneous rock in each of these groups. Around

9396-503: The north of England from the Irish Sea to the North Sea, traverses the national park from west to east. Bridleways are intended for horse riding and walkers, with cyclists also permitted to use them. Cyclists must give way to all other bridleway users. Motor vehicles are only allowed on "byways open to all traffic" ( green lanes ) but in practice Traffic Regulation Orders have been brought in on several prohibiting motor traffic, although

9512-457: The north of this region are the lower fells of Martindale Common and Bampton Common whilst in the south are the fells overlooking the Kentmere valley. Further to the east, beyond Mardale and Longsleddale is Shap Fell, an extensive area consisting of high moorland , more rolling and Pennine in nature than the mountains to the west. The Southern Fells occupy the southwestern quarter of

9628-405: The ore body. This leads to a mathematical resource estimation to estimate the size and grade of the deposit. This estimation is used to conduct a pre-feasibility study to determine the theoretical economics of the ore deposit. This identifies, early on, whether further investment in estimation and engineering studies is warranted and identifies key risks and areas for further work. The next step

9744-462: The ore concentrates, engineering concerns, milling and infrastructure costs, finance and equity requirements, and an analysis of the proposed mine from the initial excavation all the way through to reclamation. The proportion of a deposit that is economically recoverable is dependent on the enrichment factor of the ore in the area. To gain access to the mineral deposit within an area it is often necessary to mine through or remove waste material which

9860-442: The ore, lower wages, decreased occupational safety, benefits, and health standards for miners, and a lack of environmental protection measures. Artisanal miners often undertake the activity of mining seasonally. For example, crops are planted in the rainy season , and mining is pursued in the dry season . However, they also frequently travel to mining areas and work year-round. There are four broad types of ASM: Surface mining

9976-570: The overhead tanks. The Roman miners used similar methods to work cassiterite deposits in Cornwall and lead ore in the Pennines . Sluicing methods were developed by the Romans in Spain in 25 AD to exploit large alluvial gold deposits, the largest site being at Las Medulas , where seven long aqueducts tapped local rivers and sluiced the deposits. The Romans also exploited the silver present in

10092-736: The park boundary. The area was designated a national park on 9 May 1951, a month after the Peak District , the first UK national park. It retained its original boundaries until 2016, when it was extended by 3% to the east, in the direction of the Yorkshire Dales National Park , to incorporate areas land of high landscape value around the Lune Valley . The national park received 18.14 million tourist visitors in 2022. This equates to 29.15 million tourist days, counting visits of greater than three hours. It

10208-585: The park, after two attempts in the 1980s and one in 2012 failed. The park is governed by the Lake District National Park Authority, which is based at offices in Kendal . It runs a visitor centre on Windermere at a former country house called Brockhole , Coniston Boating Centre, and information centres. The park authority has 20 members: six appointed by Westmorland and Furness Council, four by Cumberland Council, and ten by

10324-399: The public has a right of way , all of which are signposted at their origin on public roads and at some other points. Within the area of the National Park in 2012 there were 2,159 km (1,342 mi) of public footpaths , 875 km (544 mi) of public bridleways , 15 km (9 mi) of restricted byways and 30 km (19 mi) of byways open to all traffic . There is also

10440-403: The range at 852 m (2,795 ft), Grisedale Pike and the hills around the valley of Coledale , and in the far northwest is Thornthwaite Forest and Lord's Seat . The fells in this area are rounded Skiddaw slate , with few tarns and relatively few rock faces. The Western Fells lie between Buttermere and Wasdale , with Sty Head forming the apex of a large triangle. Ennerdale bisects

10556-431: The remaining part of a coal seam previously exploited by other surface-mining techniques has too much overburden to be removed but can still be profitably exploited from the side of the artificial cliff made by previous mining. A typical cycle alternates sumping, which undercuts the seam, and shearing, which raises and lowers the cutter-head boom to cut the entire height of the coal seam. As the coal recovery cycle continues,

10672-414: The same latitude, ranges from −10 to 19 °C (14 to 66 °F).) The relatively low height of most of the fells means that, while snow is expected during the winter, they can be free of snow at any time of the year. Normally, significant snowfall only occurs between November and April. On average, snow falls on Helvellyn 67 days per year. Snow typically falls on 20 days of the year in the valleys, with

10788-446: The shafts could no longer be pumped dry with the available technology. Although an increased use of banknotes , credit and copper coins during this period did decrease the value of, and dependence on, precious metals , gold and silver still remained vital to the story of medieval mining. Due to differences in the social structure of society, the increasing extraction of mineral deposits spread from central Europe to England in

10904-567: The silver mines of Laurium , which helped support the Greek city state of Athens . Although they had over 20,000 slaves working them, their technology was essentially identical to their Bronze Age predecessors. At other mines, such as on the island of Thassos , marble was quarried by the Parians after they arrived in the 7th century BC. The marble was shipped away and was later found by archaeologists to have been used in buildings including

11020-529: The south. South of the estuary, the coast is formed in low cliffs of glacial till , sands, and gravels. The district also extends to the tidal waters of Morecambe Bay and several of its estuaries alongside the Furness and Cartmel Peninsulas , designated on M6 motorway signposts as the "Lake District Peninsulas", and the southern portions of which lie outside the park. These are the Duddon Estuary ,

11136-548: The southern and western fringes of the area. A single railway line, the Windermere Branch Line , penetrates from Kendal to Windermere via Staveley. Railways once served Broughton-in-Furness and Coniston (closed to passengers in 1958) and another ran from Penrith to Cockermouth via Keswick (closed west of Keswick in 1966 and completely in 1972). Part of the track of the latter is used by the improved A66 trunk road. The Cumbrian Coast line has three stations within

11252-567: The southern boundary. The southwestern Lake District ends near the Furness peninsula and Barrow-in-Furness, a town which many Lake District residents rely on for basic amenities. The southeastern area is the territory between Coniston Water and Windermere and east of Windermere towards Kendal and south to Lindale. There are no high summits in this area which are mainly low hills, knolls and limestone cuestas such as Gummer's How and Whitbarrow . Indeed, it rises only as high as 333 m (1,093 ft) at Top o' Selside east of Coniston Water;

11368-598: The southwest. Though it is slightly lower, Scafell has a 700 ft (210 m) rockface, Scafell Crag, on its northern side. This group also includes the Wastwater Screes overlooking Wasdale, the Glaramara ridge overlooking Borrowdale, the three tops of Crinkle Crags , Bowfell and Esk Pike . The core of the area is drained by the infant River Esk . Collectively these are some of the Lake District's most rugged hillsides. The second group, otherwise known as

11484-474: The surface through the tunnels and shafts. Sub-surface mining can be classified by the type of access shafts used, and the extraction method or the technique used to reach the mineral deposit. Drift mining uses horizontal access tunnels, slope mining uses diagonally sloping access shafts, and shaft mining uses vertical access shafts. Mining in hard and soft rock formations requires different techniques. Other methods include shrinkage stope mining , which

11600-602: The tomb of Amphipolis. Philip II of Macedon , the father of Alexander the Great , captured the gold mines of Mount Pangeo in 357 BC to fund his military campaigns. He also captured gold mines in Thrace for minting coinage, eventually producing 26 tons per year. However, it was the Romans who developed large-scale mining methods, especially the use of large volumes of water brought to the minehead by numerous aqueducts . The water

11716-448: The top of a mountain off to reach ore deposits at depth. Most placer deposits, because they are shallowly buried, are mined by surface methods. Finally, landfill mining involves sites where landfills are excavated and processed. Landfill mining has been thought of as a long-term solution to methane emissions and local pollution. High wall mining, which evolved from auger mining, is another form of surface mining. In high wall mining,

11832-628: The top slats. Many examples of such devices have been found in old Roman mines and some examples are now preserved in the British Museum and the National Museum of Wales . Mining as an industry underwent dramatic changes in medieval Europe . The mining industry in the early Middle Ages was mainly focused on the extraction of copper and iron . Other precious metals were also used, mainly for gilding or coinage. Initially, many metals were obtained through open-pit mining , and ore

11948-546: The valley between this massif and the North Western Fells. The North Western Fells lie between Borrowdale and Bassenthwaite Lake to the east and Buttermere and Lorton Vale to the west. Their southernmost point is at Honister Pass . This area includes the Derwent Fells above the Newlands Valley and hills to the north amongst which are Dale Head , Robinson . To the north stand Grasmoor , highest in

12064-641: The west coast up Eskdale as far as Dalegarth Station near the hamlet of Boot, catering for tourists. Another heritage railway , the Lakeside and Haverthwaite Railway , runs between Lake Windermere and Haverthwaite , and tourists can connect at Lakeside with the boats up the lake to Bowness. A vehicle-carrying cable ferry , the Windermere Ferry , runs frequent services across Windermere. There are also seasonal passenger boats on Coniston Water, Derwent Water, and Ullswater. There are many paths over which

12180-558: The wide expanse of Grizedale Forest stands between the two lakes. Kendal and Morecambe Bay stand at the eastern and southern edges of the area. The main radial valleys are (clockwise from the south) Dunnerdale , Eskdale , Wasdale , Ennerdale , the Vale of Lorton, and Buttermere valley, the Derwent Valley and Borrowdale , the Ullswater valley, Haweswater valley, Longsleddale , the Kentmere valley, those converging on

12296-469: The world's gold, followed by the establishment of large mines such as the Mount Morgan Mine , which ran for nearly a hundred years, Broken Hill ore deposit (one of the largest zinc-lead ore deposits), and the iron ore mines at Iron Knob . After declines in production, another boom in mining occurred in the 1960s. In the early 21st century, Australia remains a major world mineral producer. As

12412-474: The world, which was increasingly demanding copper for electrical and household goods. Canada's mining industry grew more slowly than did the United States due to limitations in transportation, capital, and U.S. competition; Ontario was the major producer of the early 20th century with nickel, copper, and gold. Meanwhile, Australia experienced the Australian gold rushes and by the 1850s was producing 40% of

12528-603: Was acquired for $ 470 million (and assumption of debt) by the Kennecott Corporation , a Utah -based subsidiary of the Rio Tinto Group . PacifiCorp owned 82% of NERCO stock at the time. Rio Tinto sold off NERCO's oil and gas operations later that year for $ 510 million. Tom Albanese , the former chief executive officer of the Rio Tinto Group, joined that company when it acquired NERCO, which

12644-440: Was his previous employer. Mining Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, and final reclamation or restoration of the land after the mine is closed. Mining materials are often obtained from ore bodies, lodes , veins , seams , reefs , or placer deposits . The exploitation of these deposits for raw materials

12760-628: Was mined in pre-Columbian America; in the Cerillos Mining District in New Mexico , an estimate of "about 15,000 tons of rock had been removed from Mt. Chalchihuitl using stone tools before 1700." In 1727 Louis Denys (Denis) (1675–1741), sieur de La Ronde – brother of Simon-Pierre Denys de Bonaventure and the son-in-law of René Chartier – took command of Fort La Pointe at Chequamegon Bay ; where natives informed him of an island of copper. La Ronde obtained permission from

12876-576: Was primarily extracted from shallow depths, rather than through deep mine shafts. Around the 14th century , the growing use of weapons , armour , stirrups , and horseshoes greatly increased the demand for iron. Medieval knights , for example, were often laden with up to 100 pounds (45 kg) of plate or chain link armour in addition to swords , lances and other weapons. The overwhelming dependency on iron for military purposes spurred iron production and extraction processes. The silver crisis of 1465 occurred when all mines had reached depths at which

12992-406: Was still present near the surface in colonial times. Indigenous peoples used Lake Superior copper from at least 5,000 years ago; copper tools, arrowheads, and other artifacts that were part of an extensive native trade-network have been discovered. In addition, obsidian , flint , and other minerals were mined, worked, and traded. Early French explorers who encountered the sites made no use of

13108-411: Was the removal of water from mining shafts. As miners dug deeper to access new veins, flooding became a very real obstacle. The mining industry became dramatically more efficient and prosperous with the invention of mechanically- and animal-driven pumps. Iron metallurgy in Africa dates back over four thousand years. Gold became an important commodity for Africa during the trans-Saharan gold trade from

13224-403: Was used for a variety of purposes, including removing overburden and rock debris, called hydraulic mining , as well as washing comminuted , or crushed, ores and driving simple machinery. The Romans used hydraulic mining methods on a large scale to prospect for the veins of ore, especially using a now-obsolete form of mining known as hushing . They built numerous aqueducts to supply water to

13340-465: Was used. At other parts of the site, they penetrated the water table and dewatered the mines using several kinds of machines, especially reverse overshot water-wheels . These were used extensively in the copper mines at Rio Tinto in Spain, where one sequence comprised 16 such wheels arranged in pairs, and lifting water about 24 metres (79 ft). They were worked as treadmills with miners standing on

13456-539: Was usually the gold ( placer and then lode ) and then silver that were taken into possession and extracted first. Other metals would often wait for railroads or canals, as coarse gold dust and nuggets do not require smelting and are easy to identify and transport. In the early 20th century, the gold and silver rush to the western United States also stimulated mining for coal as well as base metals such as copper, lead, and iron. Areas in modern Montana, Utah, Arizona, and later Alaska became predominant suppliers of copper to

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