Ambrosia Lake is a uranium mining district in McKinley and Cibola counties in New Mexico north of Grants that was heavily mined for uranium starting in the 1950s. It is in an anticlinal dome .
107-422: Kerr-McGee first learned about rich uranium deposits in the area in 1955. It ran a free assay service and some prospectors had sent in samples that the company found to be high in uranium. Kerr-McGee sent an agent to buy the property. This agent instead double crossed the company and bought the site for himself. Various parties (including United Western Minerals Company of General Patrick Jay Hurley ) rushed into
214-720: A gunman killed 10 people , including a police officer, in a King Soopers supermarket in Boulder . In an instance of anti-LGBT violence , a gunman killed 5 people at a nightclub in Colorado Springs during the night of November 19–20, 2022. Four warships of the U.S. Navy have been named the USS Colorado . The first USS Colorado was named for the Colorado River and served in the Civil War and later
321-575: A 91 acres (0.37 km) disposal cell. While the DOE/UMTRA site is closed and inactive, the former Kermac mill (under BHP ownership) continues with reclamation activities towards final closure in 2021. Other cleanups at mine and mill sites in the area fall under the EPA's jurisdiction. 35°25′08″N 107°49′16″W / 35.419°N 107.821°W / 35.419; -107.821 Kerr-McGee The Kerr-McGee Corporation , founded in 1929,
428-632: A large visible cloud leaving the plant. Production ceased immediately and the plant operations were suspended to never resume. In 1956 Kerr-McGee formed the Kermac Nuclear Fuels Corporation in partnership with Anderson Development Corp, and Pacific Uranium Mines Co. It was active in New Mexico. Some time in the 1970s, the Kerr-McGee Nuclear Corporation was formed. In 1983 it split into
535-676: A major industry in Colorado. This period became known locally as the Carnation Gold Rush . Poor labor conditions and discontent among miners resulted in several major clashes between strikers and the Colorado National Guard , including the 1903–1904 Western Federation of Miners Strike and Colorado Coalfield War , the latter of which included the Ludlow massacre that killed a dozen women and children. Both
642-677: A number of mines. It also bought an ore buying station at Shiprock, New Mexico . In 1953 it built a processing plant (called the Shiprock Mill ) near the buying station. In 1963 the mines and mill were sold to the Vanadium Corporation of America . Later a partnership with other companies was formed called the Kermac Nuclear Fuels Corporation. In 1957-58 this partnership built a uranium mill near Grants, New Mexico and Ambrosia Lake . In 1983
749-653: A rapid decline in the organization's power, with membership waning significantly by the end of the 1920s. Colorado became the first western state to host a major political convention when the Democratic Party met in Denver in 1908. By the U.S. census in 1930 , the population of Colorado first exceeded one million residents. Colorado suffered greatly through the Great Depression and the Dust Bowl of
856-648: A significant portion of the extreme weather occurs in the least populated areas of the state. Thunderstorms are common east of the Continental Divide in the spring and summer, yet are usually brief. Hail is a common sight in the mountains east of the Divide and across the eastern Plains, especially the northeast part of the state. Hail is the most commonly reported warm-season severe weather hazard, and occasionally causes human injuries, as well as significant property damage. The eastern Plains are subject to some of
963-674: A tribe required approval by the Secretary of the Interior and the district court agreed, granting the injunction. The tribe appealed to the Ninth Circuit Court of Appeals . The Ninth Circuit overruled the district court, finding no federal statute or regulation required such approval. Kerr-McGee then appealed to the Supreme Court, which granted certiorari and agreed to hear the case. The court decided unanimously that
1070-637: Is a state in the Western United States . It is one of the Mountain states , sharing the Four Corners region with Arizona , New Mexico , and Utah . It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, and Oklahoma to the southeast. Colorado is noted for its landscape of mountains , forests , high plains , mesas , canyons , plateaus , rivers , and desert lands. It encompasses most of
1177-519: Is a mix of high plains, foothills, and mountains. Northwest and west Colorado are predominantly mountainous, with some desert lands mixed in. Southwest and southern Colorado are a complex mixture of desert and mountain areas. The climate of the Eastern Plains is semi-arid ( Köppen climate classification : BSk ) with low humidity and moderate precipitation, usually from 15 to 25 inches (380 to 640 millimeters) annually, although many areas near
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#17327975662611284-539: Is at least partially responsible for large scale perchlorate water contamination first discovered in the Lower Colorado River in 1997; It stemmed from land used by a facility in Henderson, Nevada which was owned and operated by Kerr-McGee Chemical LLC (as of 2011 Tronox LLC), where perchlorate was produced from 1945 until 1998. In May 2007, Kerr-McGee Corp spent $ 18 million on pollution controls in
1391-841: Is drained by the Colorado River. The South Park of Colorado is the region of the headwaters of the South Platte River. In south-central Colorado is the large San Luis Valley , where the headwaters of the Rio Grande are located. The northern part of the valley is the San Luis Closed Basin , an endorheic basin that helped created the Great Sand Dunes . The valley sits between the Sangre de Cristo Mountains and San Juan Mountains . The Rio Grande drains due south into New Mexico, Texas, and Mexico. Across
1498-688: Is flat and rolling land. East of the Rocky Mountains is the Colorado Eastern Plains of the High Plains , the section of the Great Plains within Colorado at elevations ranging from roughly 3,350 to 7,500 feet (1,020 to 2,290 m). The Colorado plains are mostly prairies but also include deciduous forests , buttes , and canyons. Precipitation averages 15 to 25 inches (380 to 640 mm) annually. Eastern Colorado
1605-544: Is generally accessed through artesian wells . Heavy usage of these wells for irrigation purposes caused underground water reserves to decline in the region. Eastern Colorado also hosts a considerable amount and range of livestock, such as cattle ranches and hog farms. Roughly 70% of Colorado's population resides along the eastern edge of the Rocky Mountains in the Front Range Urban Corridor between Cheyenne, Wyoming , and Pueblo, Colorado . This region
1712-773: Is higher than the high elevation points of 18 states and the District of Columbia. The Continental Divide of the Americas extends along the crest of the Rocky Mountains. The area of Colorado to the west of the Continental Divide is called the Western Slope of Colorado . West of the Continental Divide, water flows to the southwest via the Colorado River and the Green River towards the Gulf of California . Within
1819-535: Is known as "The Western Slope") are the cities of Grand Junction , Durango , and Montrose . Download coordinates as: To the west of the Great Plains of Colorado rises the eastern slope of the Rocky Mountains . Notable peaks of the Rocky Mountains include Longs Peak , Mount Blue Sky , Pikes Peak , and the Spanish Peaks near Walsenburg , in southern Colorado. This area drains to the east and
1926-466: Is more complex than states outside of the Mountain States region. Unlike most other states, southern Colorado is not always warmer than northern Colorado. Most of Colorado is made up of mountains, foothills, high plains, and desert lands. Mountains and surrounding valleys greatly affect the local climate. Northeast, east, and southeast Colorado are mostly the high plains, while Northern Colorado
2033-522: Is partially protected from prevailing storms that blow in from the Pacific Ocean region by the high Rockies in the middle of Colorado. The "Front Range" includes Denver, Boulder , Fort Collins , Loveland, Castle Rock , Colorado Springs, Pueblo, Greeley, and other townships and municipalities in between. On the other side of the Rockies, the significant population centers in western Colorado (which
2140-559: Is presently mainly farmland and rangeland, along with small farming villages and towns. Corn , wheat , hay , soybeans , and oats are all typical crops. Most villages and towns in this region boast both a water tower and a grain elevator . Irrigation water is available from both surface and subterranean sources. Surface water sources include the South Platte , the Arkansas River , and a few other streams. Subterranean water
2247-464: Is the highest point in Colorado and the Rocky Mountains of North America. Colorado is the only U.S. state that lies entirely above 1,000 meters elevation. The point where the Arikaree River flows out of Yuma County, Colorado , and into Cheyenne County, Kansas , is the lowest in Colorado at 3,317 feet (1,011 m) elevation. This point, which is the highest low elevation point of any state,
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#17327975662612354-568: Is today the State of Colorado has been inhabited by Native Americans and their Paleoamerican ancestors for at least 13,500 years and possibly more than 37,000 years. The eastern edge of the Rocky Mountains was a major migration route that was important to the spread of early peoples throughout the Americas. The Lindenmeier site in Larimer County contains artifacts dating from approximately 8720 BCE. The Ancient Pueblo peoples lived in
2461-432: Is very prone to droughts. Most of the precipitation comes from thunderstorms, which can be severe, and from major snowstorms that occur in the winter and early spring. Otherwise, winters tend to be mostly dry and cold. In much of the region, March is the snowiest month. April and May are normally the rainiest months, while April is the wettest month overall. The Front Range cities closer to the mountains tend to be warmer in
2568-578: The Adams-Onís Treaty of 1819. The treaty took effect on February 22, 1821. Having settled its border with Spain, the U.S. admitted the southeastern portion of the Territory of Missouri to the Union as the state of Missouri on August 10, 1821. The remainder of Missouri Territory, including what would become northeastern Colorado, became an unorganized territory and remained so for 33 years over
2675-593: The Asiatic Squadron , where it was attacked during the 1871 Korean Expedition . The later three ships were named in honor of the state, including an armored cruiser and the battleship USS Colorado , the latter of which was the lead ship of her class and served in World War II in the Pacific beginning in 1941. At the time of the attack on Pearl Harbor , the battleship USS Colorado was located at
2782-556: The Clean Air Act when it installed a new open hearth furnace in 1993. The company spent $ 4.8 million to install proper pollution controls at the facility reducing total carbon monoxide emission by 115 tons per year, an 80% reduction from previous levels. Kerr-McGee was involved in several nuclear endeavors. In 1952 Kerr-McGee bought the Navajo Uranium Mining Company , including an interest in
2889-567: The False Claims Act ("FCA"). In the suit, Mr. Maxwell alleged that, based on the information uncovered during his audit, "Kerr-McGee knowingly made false and/or fraudulent statements on the monthly royalty reports submitted to the MMS and 'understated and underpaid' its federal royalties." In January 2007, after a full trial on the issues, Kerr-McGee was found by a jury to have failed to report earnings, and thus, under-paying royalties due to
2996-845: The Fast Flux Test Facility at the Hanford Site in Washington State. The plant shut down in 1976. In 1967 Kerr-McGee bought the American Potash and Chemical Company , which owned the Rare Earths Facility in West Chicago, Illinois . This facility produced thorium , radium , and uranium by acid leaching of monazite sands and other ores. It stopped work in 1973. In 1968 the company started construction on what would become
3103-561: The Great Lakes region to hunt across the High Plains of Colorado and Wyoming . The Spanish Empire claimed Colorado as part of Nuevo México . The U.S. acquired the territorial claim to the eastern Rocky Mountains with the Louisiana Purchase from France in 1803. This U.S. claim conflicted with the claim by Spain to the upper Arkansas River Basin . In 1806, Zebulon Pike led a U.S. Army reconnaissance expedition into
3210-561: The Moroccan controlled area of the disputed territory of Western Sahara in 2001. In 2003, one of Norway's main private investment funds, Skagen Vekst , sold their €3.6 million stake in the oil company, referring to ethical problems surrounding Kerr-McGee's engagement in Western Sahara. In May 2005, despite the number of growing protests, the company renewed the contract signed with Moroccan authorities until October. In June 2005,
3317-548: The Navajo Tribal Council passed two tax ordinances. The first was a tax of 3% on leaseholds (such as mineral rights ) and the second was a 5% tax on business activity. Kerr-McGee held substantial mineral rights on the Navajo Nation and filed a lawsuit in the federal district court seeking an injunction to prohibit the tribe from collecting the tax. Kerr-McGee argued that any tax of non-Indians by
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3424-628: The Norwegian government sold the $ 52.7 million it had invested in the company through the Government Petroleum Fund (one of the biggest investment funds of the world), characterizing Kerr-McGee's contract in Western Sahara as having " particularly serious violations of fundamental ethical norms ". That same month, another two Norwegian private investment funds ( Storebrand and KLP ) sold their participations on Kerr-McGee, €1 million and €1.45 million respectively. On May 2, 2006,
3531-728: The Provisional Government of the Territory of Jefferson on August 24, 1859, but this new territory failed to secure approval from the Congress of the United States embroiled in the debate over slavery. The election of Abraham Lincoln for the President of the United States on November 6, 1860, led to the secession of nine southern slave states and the threat of civil war among the states . Seeking to augment
3638-841: The Quivira Mining Corporation and Sequoyah Fuels Corporation . Quivira got the Ambrosia Lake , NM mine, while Sequoyah Fuels took over the Sequoyah plant in Gore, OK , as well as the Cimarron plant in Crescent, OK . Sequoyah was sold to General Atomics in 1988. and Quivira was sold to Rio Algom in 1989. The Cimarron Corporation was a subdivision that took control of the Cimarron plant in 1988. When Tronox
3745-615: The Rocky Mountains was a major migration route for early peoples who spread throughout the Americas. In 1848, much of the Nuevo México region was annexed to the United States with the Treaty of Guadalupe Hidalgo . The Pike's Peak Gold Rush of 1858–1862 created an influx of settlers. On February 28, 1861, U.S. President James Buchanan signed an act creating the Territory of Colorado , and on August 1, 1876, President Ulysses S. Grant signed Proclamation 230 , admitting Colorado to
3852-648: The Sangre de Cristo Range to the east of the San Luis Valley lies the Wet Mountain Valley . These basins, particularly the San Luis Valley, lie along the Rio Grande rift , a major geological formation of the Rocky Mountains, and its branches. The Western Slope of Colorado includes the western face of the Rocky Mountains and all of the area to the western border. This area includes several terrains and climates from alpine mountains to arid deserts. The Western Slope includes many ski resort towns in
3959-545: The Sequoyah Fuels Corporation plant in Gore, Oklahoma . In 1970 the plant started turning yellowcake uranium into uranium hexafluoride . In 1987 it began producing depleted uranium tetrafluoride using depleted uranium hexafluoride as input. In 1988 SFC was sold to General Atomics . In late November 1993 production ceased after a stuck valve in the processing plant stuck open and caused an uncontrolled reaction. The uncontrolled reaction resulted in
4066-521: The Southern Rocky Mountains , as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains . Colorado is the eighth most extensive and 21st most populous U.S. state. The United States Census Bureau estimated the population of Colorado at 5,877,610 as of July 1, 2023, a 1.80% increase since the 2020 United States census. The region has been inhabited by Native Americans and their ancestors for at least 13,500 years and possibly much longer. The eastern edge of
4173-435: The Territory of New Mexico , and the Territory of Utah . On April 9, 1851, Hispano settlers from the area of Taos settled the village of San Luis , then in the New Mexico Territory , as Colorado's first permanent Euro-American settlement , further cementing the traditions of New Mexican cuisine and New Mexico music in the developing Southern Rocky Mountain Front . In 1854, Senator Stephen A. Douglas persuaded
4280-456: The U.S. Congress to divide the unorganized territory east of the Continental Divide into two new organized territories, the Territory of Kansas and the Territory of Nebraska , and an unorganized southern region known as the Indian Territory . Each new territory was to decide the fate of slavery within its boundaries, but this compromise merely served to fuel animosity between free soil and pro-slavery factions. The gold seekers organized
4387-428: The Union as the 38th state. The Spanish adjective "colorado" means "colored red" or "ruddy". Colorado is nicknamed the " Centennial State " because it became a state 100 years (and four weeks) after the signing of the United States Declaration of Independence . Denver is the capital, the most populous city , and the center of the Front Range Urban Corridor . Colorado Springs is the second most populous city of
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4494-448: The Union cause. In 1862, a force of Texas cavalry invaded the Territory of New Mexico and captured Santa Fe on March 10. The object of this Western Campaign was to seize or disrupt Colorado and California's gold fields and seize Pacific Ocean ports for the Confederacy. A hastily organized force of Colorado volunteers force-marched from Denver City, Colorado Territory , to Glorieta Pass , New Mexico Territory, in an attempt to block
4601-432: The Ute Indian reservation in southwestern Colorado. The Ute people were removed from the San Juan Mountains the following year. The United States Congress passed an enabling act on March 3, 1875, specifying the requirements for the Territory of Colorado to become a state. On August 1, 1876 (four weeks after the Centennial of the United States ), U.S. President Ulysses S. Grant signed a proclamation admitting Colorado to
4708-417: The free Territory of Colorado . The original boundaries of Colorado remain unchanged except for government survey amendments. In 1776, Spanish priest Silvestre Vélez de Escalante recorded that Native Americans in the area knew the river as el Rio Colorado for the red-brown silt that the river carried from the mountains. In 1859, a U.S. Army topographic expedition led by Captain John Macomb located
4815-404: The question of slavery . After 11 years of war, Spain finally recognized the independence of Mexico with the Treaty of Córdoba signed on August 24, 1821. Mexico eventually ratified the Adams–Onís Treaty in 1831. The Texian Revolt of 1835–36 fomented a dispute between the U.S. and Mexico which eventually erupted into the Mexican–American War in 1846. Mexico surrendered its northern territory to
4922-458: The 10th Circuit Court of Appeals reversed the ruling of the lower court, remanding it back for further proceedings. On September 16, 2010, U.S. District Court Judge Marcia S. Krieger of Colorado ordered Kerr-McGee to pay treble damages, or almost $ 23 million. As a whistle-blower under the FCA, Mr. Maxwell would be entitled to twenty-five percent of the amount recovered for the government, or approximately $ 5.7 million. Per Mr. Maxwell, however, most of
5029-427: The 1913–1914 Coalfield War and the Denver streetcar strike of 1920 resulted in federal troops intervening to end the violence. In 1927, the 1927-28 Colorado coal strike occurred and was ultimately successful in winning a dollar a day increase in wages. During it however the Columbine Mine massacre resulted in six dead strikers following a confrontation with Colorado Rangers . In a separate incident in Trinidad
5136-404: The 1930s, but a major wave of immigration following World War II boosted Colorado's fortune. Tourism became a mainstay of the state economy, and high technology became an important economic engine. The United States Census Bureau estimated that the population of Colorado exceeded five million in 2009. On September 11, 1957, a plutonium fire occurred at the Rocky Flats Plant , which resulted in
5243-499: The 1970s the company had a forest products division, and mineral mining in New Mexico, Arizona, and Idaho, and coal mining in Wyoming and Illinois. Most of the U.S operations were on land owned by the U.S. government (i.e. Bureau of Land Management , National Forest) and the Navajo Indian tribe. Kerr-McGee owned a potash operation in California from 1974 to 1990. Kerr-McGee had exploration, development, and production projects in Bohai Bay, China, near Beijing . Additional exploration
5350-399: The Green River briefly crosses over into Colorado. The Western Slope of Colorado is drained by the Colorado River and its tributaries (primarily the Gunnison River , Green River , and the San Juan River ). The Colorado River flows through Glenwood Canyon , and then through an arid valley made up of desert from Rifle to Parachute , through the desert canyon of De Beque Canyon , and into
5457-487: The Navajo Nation had the right to tax Kerr-McGee because tribal authority to tax had already been recognized, and because no federal law prohibited exercising tribal sovereignty in enacting a tax. Main oil and gas operations in the US were the Mid-Continent, Rocky Mountains, onshore Louisiana, and offshore in the Gulf of Mexico. Main offices were located in downtown Denver and the Greenspoint area of Houston. Corporate headquarters were located in Downtown Oklahoma City . In
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#17327975662615564-409: The Rocky Mountains and towns west to Utah. It is less populous than the Front Range but includes a large number of national parks and monuments. The northwestern corner of Colorado is a sparsely populated region, and it contains part of the noted Dinosaur National Monument , which not only is a paleontological area, but is also a scenic area of rocky hills, canyons, arid desert, and streambeds. Here,
5671-527: The Southwestern United States. In 1864, Territorial Governor John Evans appointed the Reverend John Chivington as Colonel of the Colorado Volunteers with orders to protect white settlers from Cheyenne and Arapaho warriors who were accused of stealing cattle. Colonel Chivington ordered his troops to attack a band of Cheyenne and Arapaho encamped along Sand Creek. Chivington reported that his troops killed more than 500 warriors. The militia returned to Denver City in triumph, but several officers reported that
5778-421: The Territory. The Union Pacific linked up with the Central Pacific Railroad at Promontory Summit, Utah , on May 10, 1869, to form the First transcontinental railroad . The Denver Pacific Railway reached Denver in June of the following year, and the Kansas Pacific arrived two months later to forge the second line across the continent. In 1872, rich veins of silver were discovered in the San Juan Mountains on
5885-466: The Texans. On March 28, the Coloradans and local New Mexico volunteers stopped the Texans at the Battle of Glorieta Pass , destroyed their cannon and supply wagons, and dispersed 500 of their horses and mules. The Texans were forced to retreat to Santa Fe. Having lost the supplies for their campaign and finding little support in New Mexico, the Texans abandoned Santa Fe and returned to San Antonio in defeat. The Confederacy made no further attempts to seize
5992-417: The U.S. government. The jury award damages in the amount of US$ 7.6 million. Despite the jury's verdict, however, before entering judgment, the court reconsidered an earlier Motion for Summary Judgement filed by Kerr-McGee and reversed its prior holding, this time determining that the court lacked subject matter jurisdiction to hear the case at all. The case was appealed by Mr. Maxwell, and on September 10, 2008,
6099-408: The U.S. with the Treaty of Guadalupe Hidalgo after the war in 1848; this included much of the western and southern areas of Colorado. Most American settlers first traveled to Colorado through the Santa Fe Trail , which connected the U.S. to Santa Fe and the Camino Real de Tierra Adentro southward. Others were traveling overland west to the Oregon Country , the new goldfields of California , or
6206-399: The Union as the 38th state and earning it the moniker "Centennial State". The discovery of a major silver lode near Leadville in 1878 triggered the Colorado Silver Boom . The Sherman Silver Purchase Act of 1890 invigorated silver mining, and Colorado's last, but greatest, gold strike at Cripple Creek a few months later lured a new generation of gold seekers. Colorado women were granted
6313-442: The Western Slope can be found at Colorado Mesa University in Grand Junction, Western Colorado University in Gunnison, Fort Lewis College in Durango, and Colorado Mountain College in Glenwood Springs and Steamboat Springs. The Four Corners Monument in the southwest corner of Colorado marks the common boundary of Colorado, New Mexico , Arizona , and Utah ; the only such place in the United States. The climate of Colorado
6420-447: The Western Slope. Grand Junction and Durango are the only major centers of television broadcasting west of the Continental Divide in Colorado, though most mountain resort communities publish daily newspapers. Grand Junction is located at the juncture of Interstate 70 and US 50, the only major highways in western Colorado. Grand Junction is also along the major railroad of the Western Slope, the Union Pacific . This railroad also provides
6527-509: The agreement required Kerr-McGee to pay a $ 200,000 penalty , and spend $ 250,000 on environmental projects to benefit the areas in which violations occurred. In July 2005, the United States Environmental Protection Agency (EPA) settled with Kerr McGee Chemical in Henderson, Nevada that required the company to pay $ 55,392 penalty to resolve air permitting violations at its facility that began in 1993. The EPA cited Kerr-McGee for failing to install carbon monoxide emissions controls required under
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#17327975662616634-499: The alpine snow melts by mid-August except for a few snow-capped peaks and a few small glaciers. The Colorado Mineral Belt , stretching from the San Juan Mountains in the southwest to Boulder and Central City on the front range, contains most of the historic gold- and silver-mining districts of Colorado. The 30 highest major summits of the Rocky Mountains of North America are all within the state. The summit of Mount Elbert at 14,437.6 feet (4,400.58 m) elevation in Lake County
6741-409: The area to get sections of property. However Kerr-McGee wound up owning most of Ambrosia Lake. Kerr-McGee then allied with Anderson Development Corporation, and Pacific Uranium Mines to form the Kermac Nuclear Fuels Corporation. They built a mill there. When Kerr-McGee Nuclear split into Quivira Mining and Sequoyah Fuels subsidiaries in 1983, Quivira got the Ambrosia Lake property. When Quivira
6848-403: The arid desert of Grand Valley , where the city of Grand Junction is located. Also prominent is the Grand Mesa , which lies to the southeast of Grand Junction; the high San Juan Mountains, a rugged mountain range; and to the north and west of the San Juan Mountains, the Colorado Plateau . Grand Junction, Colorado , at the confluence of the Colorado and Gunnison Rivers, is the largest city on
6955-409: The assumption of $ 2.6 billion in debt. Kerr-McGee shareholders approved the offer on August 10, 2006, and Kerr-McGee ceased to exist independently. All operations with the exception of Tronox which had been spun off in 2005 moved out of Oklahoma . Within a few years, the top positions at Anadarko had been filled by Kerr-McGee employees and many long-time Anadarko employees had left or been removed from
7062-409: The base of operations in Denver , Colorado and added large resource areas throughout the Rocky Mountains . Until 2005, Kerr-McGee had two major divisions: chemical and oil-related. On November 21, 2005, its chemical division, based in Oklahoma City, was sold as an IPO , Tronox , thereby making Oklahoma City home to the administrative side of Kerr-McGee, while exploration and production management
7169-432: The boundaries of the new Territory of Colorado exclusively by lines of latitude and longitude , stretching from 37°N to 41°N latitude, and from 102°02′48″W to 109°02′48″W longitude ( 25°W to 32°W from the Washington Meridian ). After 163 years of government surveys, the borders of Colorado were officially defined by 697 boundary markers and 697 straight boundary lines . Colorado, Wyoming , and Utah are
7276-404: The company declared its intention to no longer drill off the coast of the Western Sahara, by not renewing the contract signed with Morocco. On June 14, 2004, Bobby Maxwell, a senior government auditor for the U.S. Department of the Interior's Minerals Management Service ("MMS"), filed suit in federal court on behalf of the U.S. Government against Kerr-McGee, under the whistle-blowing provisions of
7383-408: The company, making the merger between Anadarko and Kerr-McGee a "wag the dog" transaction. Kerr-McGee v. Navajo Tribe , 471 U.S. 195 (1985), was a case in which the Supreme Court of the United States held that an Indian tribe is not required to obtain the approval of the Secretary of the Interior in order to impose taxes on non-tribal persons or entities doing business on a reservation. In 1978,
7490-413: The confluence of the Green River with the Grand River in what is now Canyonlands National Park in Utah . The Macomb party designated the confluence as the source of the Colorado River. On April 12, 1861, South Carolina artillery opened fire on Fort Sumter to start the American Civil War . While many gold seekers held sympathies for the Confederacy , the vast majority remained fiercely loyal to
7597-409: The disputed region. Colonel Pike and his troops were arrested by Spanish cavalrymen in the San Luis Valley the following February, taken to Chihuahua , and expelled from Mexico the following July. The U.S. relinquished its claim to all land south and west of the Arkansas River and south of 42nd parallel north and west of the 100th meridian west as part of its purchase of Florida from Spain with
7704-539: The entire Great Basin and all lands drained by the rivers Green , Grand , and Colorado . The federal government of the U.S. flatly refused to recognize the new Mormon government because it was theocratic and sanctioned plural marriage . Instead, the Compromise of 1850 divided the Mexican Cession and the northwestern claims of Texas into a new state and two new territories, the state of California ,
7811-608: The first companies to use drillships in the Gulf of Mexico, and later one of the first companies to use a Spar platform in the area. With the acquisition of the Oryx Energy Company of Dallas , Texas in 1999, Kerr-McGee gained more onshore assets, as well as significant assets in several foreign areas in Algeria and western Kazakhstan . Later acquisitions of HS Resources and Westport Resources Corp. established
7918-602: The first comprehensive settlement under the Clean Air Act that reduced harmful emission and conserved natural gas at production facilities across Utah and Colorado . The settlement addressed violations discovered at several of Kerr-McGee's natural gas compressor stations located on the Uintah and Ouray Indian Reservation near Vernal, Utah , and in the Denver Julesburg Basin near Weld County, Colorado . In addition to implementing pollution controls,
8025-530: The former Kerr-McGee is now part of Occidental Petroleum . The company later known as Kerr-McGee was founded in 1929 as Anderson & Kerr Drilling Company by Oklahoma businessman-politician Robert S. Kerr (1896-1963) and oil driller James L. Anderson. When Dean A. McGee (1904-1989), a former chief geologist for Phillips Petroleum , joined the firm in 1946, it changed its name to Kerr-McGee Oil Industries, Incorporated. The company initially focused mostly on off-shore oil exploration and production, being one of
8132-483: The infamous Columbine High School massacre in 1999 which made international news, where two gunmen killed 12 students and one teacher, before committing suicide. The incident has spawned many copycat incidents . On July 20, 2012, a gunman killed 12 people in a movie theater in Aurora . The state responded with tighter restrictions on firearms, including introducing a limit on magazine capacity. On March 22, 2021,
8239-587: The interior of the Rocky Mountains are several large parks which are high broad basins. In the north, on the east side of the Continental Divide is the North Park of Colorado . The North Park is drained by the North Platte River , which flows north into Wyoming and Nebraska. Just to the south of North Park, but on the western side of the Continental Divide, is the Middle Park of Colorado , which
8346-628: The local and state Democrat and Republican parties , particularly in the governor's office and city governments of Denver, Cañon City , and Durango . A particularly strong element of the Klan controlled the Denver Police . Cross burnings became semi-regular occurrences in cities such as Florence and Pueblo. The Klan targeted African-Americans, Catholics , Eastern European immigrants, and other non-White Protestant groups. Efforts by non-Klan lawmen and lawyers including Philip Van Cise led to
8453-700: The mayor was accused of deputizing members of the KKK against the striking workers. More than 5,000 Colorado miners—many immigrants—are estimated to have died in accidents since records were first formally collected following an 1884 accident in Crested Butte that killed 59. In 1924, the Ku Klux Klan Colorado Realm achieved dominance in Colorado politics. With peak membership levels, the Second Klan levied significant control over both
8560-560: The midst and aftermath of the Civil War, many discouraged prospectors returned to their homes, but a few stayed and developed mines, mills, farms, ranches, roads, and towns in Colorado Territory. On September 14, 1864, James Huff discovered silver near Argentine Pass , the first of many silver strikes. In 1867, the Union Pacific Railroad laid its tracks west to Weir, now Julesburg , in the northeast corner of
8667-686: The mill was taken over by a new Kerr-McGee subsidiary called the Quivira Mining Corporation . Quivira was sold to Rio Algom in 1989. Kerr-McGee purchased the Lakeview Mining Company of Lake County, Oregon in 1961. The plant was shut down in late 1960 or 1961 and sold to Atlantic Richfield in 1968. From about 1962-1966 Kerr-McGee processed uranium at its oil refinery site in Cushing, Oklahoma . It received licenses in 1962 for processing uranium and thorium, and in 1963 for enriched uranium . In 1966 it stopped production. An attempt
8774-435: The money awarded would go to pay the legal fees associated with his almost-10-year fight to force Kerr-McGee to change its deceptive practices and pay what it owed to the public. It is alleged that Karen Silkwood was negligently or purposefully contaminated with plutonium while working at Kerr-McGee's Cimarron Fuel Fabrication Site and investigating safety violations at the plant. Her activism and November 1974 death were
8881-531: The naval base in San Diego, California, and thus went unscathed. The most recent vessel to bear the name USS Colorado is Virginia-class submarine USS Colorado (SSN-788) , which was commissioned in 2018. Colorado is notable for its diverse geography, which includes alpine mountains, high plains, deserts with huge sand dunes, and deep canyons. In 1861, the United States Congress defined
8988-901: The new Mormon settlements of the State of Deseret in the Salt Lake Valley , avoided the rugged Southern Rocky Mountains , and instead followed the North Platte River and Sweetwater River to South Pass (Wyoming) , the lowest crossing of the Continental Divide between the Southern Rocky Mountains and the Central Rocky Mountains. In 1849, the Mormons of the Salt Lake Valley organized the extralegal State of Deseret , claiming
9095-482: The only states that have their borders defined solely by straight boundary lines with no natural features. The southwest corner of Colorado is the Four Corners Monument at 36°59′56″N , 109°2′43″W . The Four Corners Monument , located at the place where Colorado, New Mexico , Arizona , and Utah meet, is the only place in the United States where four states meet. Approximately half of Colorado
9202-620: The plains and into the foothills, there is a wide variety of climate types. Locations merely a few miles apart can experience entirely different weather depending on the topography. Most valleys have a semi-arid climate, not unlike the eastern plains, which transitions to an alpine climate at the highest elevations. Microclimates also exist in local areas that run nearly the entire spectrum of climates, including subtropical highland ( Cfb/Cwb ), humid subtropical ( Cfa ), humid continental ( Dfa/Dfb ), Mediterranean ( Csa/Csb ) and subarctic ( Dfc ). Extreme weather changes are common in Colorado, although
9309-628: The political power of the Union states , the Republican Party -dominated Congress quickly admitted the eastern portion of the Territory of Kansas into the Union as the free State of Kansas on January 29, 1861, leaving the western portion of the Kansas Territory, and its gold-mining areas, as unorganized territory. Thirty days later on February 28, 1861, outgoing U.S. President James Buchanan signed an Act of Congress organizing
9416-444: The population of Colorado resides, lies in a pronounced precipitation shadow as a result of being on the lee side of the Rocky Mountains. In summer, this area can have many days above 95 °F (35 °C) and often 100 °F (38 °C). On the plains, the winter lows usually range from 25 to −10 °F (−4 to −23 °C). About 75% of the precipitation falls within the growing season, from April to September, but this area
9523-494: The right to vote on November 7, 1893, making Colorado the second state to grant universal suffrage and the first one by a popular vote (of Colorado men). The repeal of the Sherman Silver Purchase Act in 1893 led to a staggering collapse of the mining and agricultural economy of Colorado, but the state slowly and steadily recovered. Between the 1880s and 1930s, Denver's floriculture industry developed into
9630-405: The rivers are semi-humid climate. The area is known for its abundant sunshine and cool, clear nights, which give this area a great average diurnal temperature range . The difference between the highs of the days and the lows of the nights can be considerable as warmth dissipates to space during clear nights, the heat radiation not being trapped by clouds. The Front Range urban corridor, where most of
9737-479: The significant plutonium contamination of surrounding populated areas. From the 1940s and 1970s, many protest movements gained momentum in Colorado, predominantly in Denver. This included the Chicano Movement , a civil rights , and social movement of Mexican Americans emphasizing a Chicano identity that is widely considered to have begun in Denver. The National Chicano Youth Liberation Conference
9844-483: The so-called battle was a blatant massacre of Indians at peace, that most of the dead were women and children, and that the bodies of the dead had been hideously mutilated and desecrated. Three U.S. Army inquiries condemned the action, and incoming President Andrew Johnson asked Governor Evans for his resignation, but none of the perpetrators was ever punished. This event is now known as the Sand Creek massacre . In
9951-651: The southeast, ultimately either via the Mississippi River or the Rio Grande into the Gulf of Mexico . The Rocky Mountains within Colorado contain 53 true peaks and 58 named peaks that are 14,000 feet (4,267 m) or higher in elevation above sea level, known as fourteeners . These mountains are largely covered with trees such as conifers and aspens up to the tree line , at an elevation of about 12,000 feet (3,658 m) in southern Colorado to about 10,500 feet (3,200 m) in northern Colorado. Above this tree line, only alpine vegetation grows. Much of
10058-456: The state. Residents of the state are known as Coloradans , although the antiquated "Coloradoan" is occasionally used. Major parts of the economy include government and defense, mining, agriculture , tourism, and increasingly other kinds of manufacturing. With increasing temperatures and decreasing water availability, Colorado's agriculture forestry, and tourism economies are expected to be heavily affected by climate change . The region that
10165-454: The subject of the 1983 film Silkwood . In a civil suit against Kerr-McGee by the Estate of Karen Silkwood, Judge Frank Theis told the jury, "If you find that the damage to the person or property of Karen Silkwood resulted from the operation of this plant, Kerr-McGee is liable." The jury rendered its verdict of $ 505,000 in damages and $ 10,000,000 in punitive damages. On appeal, the judgment
10272-505: The tracks for Amtrak 's California Zephyr passenger train, which crosses the Rocky Mountains between Denver and Grand Junction. The Western Slope includes multiple notable destinations in the Colorado Rocky Mountains, including Glenwood Springs , with its resort hot springs, and the ski resorts of Aspen , Breckenridge , Vail , Crested Butte , Steamboat Springs , and Telluride . Higher education in and near
10379-854: The valleys and mesas of the Colorado Plateau in far southwestern Colorado. The Ute Nation inhabited the mountain valleys of the Southern Rocky Mountains and the Western Rocky Mountains , even as far east as the Front Range of the present day. The Apache and the Comanche also inhabited the Eastern and Southeastern parts of the state. In the 17th century, the Arapaho and Cheyenne moved west from
10486-467: The winter due to Chinook winds which warms the area, sometimes bringing temperatures of 70 °F (21 °C) or higher in the winter. The average July temperature is 55 °F (13 °C) in the morning and 90 °F (32 °C) in the afternoon. The average January temperature is 18 °F (−8 °C) in the morning and 48 °F (9 °C) in the afternoon, although variation between consecutive days can be 40 °F (22 °C). Just west of
10593-479: Was an American energy company involved in oil exploration , production of crude oil , natural gas , perchlorate and uranium mining and milling in various countries. On June 23, 2006, Anadarko Petroleum acquired Kerr-McGee in an all-cash transaction totalling $ 16.5 billion plus $ 2.6 billion in debt and all operations moved from their base in Oklahoma , United States. As a result of further acquisitions, most of
10700-490: Was held in Colorado in March 1969. In 1967, Colorado was the first state to loosen restrictions on abortion when governor John Love signed a law allowing abortions in cases of rape, incest, or threats to the woman's mental or physical health. Many states followed Colorado's lead in loosening abortion laws in the 1960s and 1970s. Since the late 1990s, Colorado has been the site of multiple major mass shootings , including
10807-545: Was located in Denver and Houston. Through acquisitions, for a time Kerr-McGee marketed products under the Deep Rock, Coast, Power, and Peoples brands in addition to its own. It also marketed Blue Velvet motor oil, a multiviscosity grade with a blue dyed anti-wear additive. On June 23, 2006, Anadarko Petroleum , based in The Woodlands, Texas , purchased Kerr-McGee in an all-cash transaction totaling $ 16.5 billion plus
10914-505: Was made to move all regulated nuclear material to the company's new Cimarron facility at Crescent, OK. Cleanups were attempted in 1966, 1972, 1979–82, and the 1990s In about 1965 Kerr-McGee started producing uranium fuel at its Cimarron Fuel Fabrication Site . This was located near the Cimarron River and Crescent, Oklahoma . From 1973 to 1975 it would also produce mixed Plutonium-Uranium Oxide (MOX) 'driver fuel pins' for use in
11021-613: Was planned for the South China Sea. These operations were run primarily from an office in Beijing . Kerr-McGee and its subsidiaries formerly operated in western Kazakhstan , western Australia, Brazil , Trinidad , Benin , the United Kingdom and several other more minor locations around the world at various times. Kerr-McGee received international criticism for undertaking exploration for hydrocarbon resources offshore
11128-474: Was reduced to $ 5,000. In 1984, the U.S. Supreme Court restored the original verdict ( Silkwood v. Kerr-McGee Corp. , 464 U.S. 283 (1984)). The suit was headed for retrial when Kerr-McGee settled out of court in 1986 for $ 1.38 million, admitting no liability. Gerry Spence , the noted trial lawyer from Jackson Hole, Wyoming , represented the Karen Silkwood estate in this litigation. Kerr-McGee
11235-696: Was sold to Anadarko Petroleum . Tronox later went bankrupt, blaming in part the environmental liabilities inherited from KMC. In 2009 purchasers of Tronox filed a class action lawsuit against Anadarko for having allegedly misled investors. In the US, nuclear companies must get licenses from the Nuclear Regulatory Commission . Kerr-McGee licenses follow: Colorado Colorado ( / ˌ k ɒ l ə ˈ r æ d oʊ , - ˈ r ɑː d oʊ / KOL -ə- RAD -oh, - RAH -doh , other variants; Spanish: [koloˈɾaðo] )
11342-539: Was sold to Rio Algom in 1989, Rio got the mine and mill. Rio was later bought by Billiton which later became BHP . By 1982, approximately 111 acres (0.4 km) of radioactive tailings were left from almost 25 years of uranium extraction. Wind and rain spread the material over an area of 230 acres (0.9 km). Between 1987 and 1995, the Department of Energy remediated the site, encasing 5,200,000 cu yd (4,000,000 m) of contaminated material in
11449-418: Was spun off in 2006, it would get ownership of Cimarron Corporation and responsibility for the plant as well. Kerr-McGee bought the American Potash and Chemical Company in 1967, including its Rare Earths Facility that processed uranium and thorium. AMPOT became Kerr-McGee Chemical Company around 1970 or 1974. In 2005 this became Tronox . Tronox became independent in 2006, a few months before Kerr-McGee
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