Search results
Results From The WOW.Com Content Network
The only working underground mine in Colorado in 2008 was the Cash mine, built in 1872, at Gold Hill in Boulder County. Each ton of ore yields about .75 ounce of gold at the mine, which daily extracts about 50 tons of ore. [4] 2004 nahcolite: Piceance Basin: American Soda pilot project that mined via fracturing ended after 3.75 years. [5] 2004 coal
Uravan (a contraction of uranium/vanadium [2]) is a former uranium mining town [3] in western Montrose County, Colorado, United States, which still appears on some maps.The town was a company town established by U. S. Vanadium Corporation in 1936 to extract the rich vanadium ore in the region.
Colorado Springs Mining Stock Association was founded about 1886 to trade stock of Cripple Creek mines, some of which grew between 1,000% and 10,000% by 1893. It traded stocks "in almost every state and country in the world." John W. Proudfit & Co., founded in 1890, was the first organization in Colorado Springs to buy and sell mining stocks.
Former El Paso County courthouse, Old Colorado City. Colorado Territory was established on November 5, 1861. [11] Until August 14, 1862 (including one legislative session), the city was the Colorado Territory capital until it was moved to Golden. [12] Colorado City effectively functioned as the capital for only five days.
Coal mining in Colorado is known to negatively impact both air and water quality. [11] [12] The West Elk Mine in Gunnison County is the largest methane emitter in Colorado, and in 2017 it emitted a quantity of methane equivalent to 98,000 cars. [13] Colorado's 8 remaining coal mines use an unknown quantity of water each year. [14]
The Cresson mine open pits are located a few miles north of Victor. Mining continues today under the ownership of Newmont Corporation, which boosted gold production from 211,000 troy ounces (6.6 t) in 2014 to 451,000 troy ounces (14.0 t) in 2017, and 322,000 troy ounces (10.0 t) in 2019. [29] [30]
The Leadville Historic District is in the mining town of Leadville, Colorado. The National Historic Landmark District includes 67 mines in the mining district east of the city up to the 12,000 foot (3658 m) level, and a defined portion of the village area. It was designated in 1961.
Colorado has ten mines with active water treatment. There are 4.7 billion gallons of polluted water produced per year between these ten mines. Of them, two are abandoned, seven are closed, and one is active. The one active mine, Climax, will produce 2.9 billion gallons of polluted water at its new site. [2]