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This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
The following table lists the coal mines in the United States that produced at least 4,000,000 short tons of coal.. According to the U.S. Energy Information Administration (EIA), there were 853 coal mines in the U.S. in 2015, producing a total of 896,941,000 short tons of coal.
The Black Thunder Coal Mine is a surface coal mine in the U.S. state of Wyoming, located in the Powder River Basin which contains one of the largest deposits of coal in the world. In 2022, the mine produced 62,180,000 short tons (56,410,000 t) of coal, [ 1 ] over 25% of Wyoming's total coal production.
One of only two shaft mines dug in the Birmingham District, and the last ore mine to operate in the region, closing in 1971. Sloss Mines: Alabama 33.39816°N 86.93276°W Red Mountain: Sloss Iron and Steel Company: 1882–1960s A group of mines in southwestern Jefferson County, Alabama. [2]
Average annual number of coal miners, 1985 to 2015 (Data from St. Louis Federal Reserve Board) Average annual number of employed coal miners in the United States, 1890–2014. At the end of July 2022, the coal industry employed approximately 38,400 miners. [1] US employment in coal mining peaked in 1923, when there were 863,000 coal miners. [45]
Eight of the ten largest mines in the United States are located in the basin. Annual Production at North Antelope Rochelle was 107.7 million tons in 2012, 109.0 million tons in 2011, 105.8 million tons in 2010, and 109.3 million tons in 2015, making the North Antelope Rochelle the largest producer of coal in the United States. [13]
For comparison, the second largest producer, the United States, produced more than 1.1 billion tons in 2007. An estimated 5 million people work in China's coal-mining industry. As many as 20,000 miners die in accidents each year. [65] Most Chinese mines are deep underground and do not produce the surface disruption typical of strip mines.
The mine is the largest human-made excavation, and deepest open-pit mine in the world, [4] [5] which is considered to have produced more copper than any other mine in history – more than 19,000,000 short tons (17,000,000 long tons; 17,000,000 t). [5]