Mining in the United States
In the United States, issues like mountaintop removal, and acid mine drainage have widespread impacts on all parts of the environment.[23] By the Middle Ages, stone tools were replaced by explosives, black powder, to break-up larger rock formations.[23] In terms of technology, explosives such as black powder were phased out as dynamite increased in popularity as a new mining method in the 19th century.[27] Where annual mining deaths had numbered more than 1,000 a year during the early part of the 20th century, they decreased to an average of about 500 during the late 1950s, and to 93 during the 1990s.[39] 40% of all global mines are located in areas of increased biodiversity that have experienced decline in species population due to surrounding industry.[40] Chemicals used in the mining process also result in soil erosion that strips the land of essential nutrients affecting surrounding plant and animal life.In the case of the proposed Crandon mine, the U.S. Supreme Court found that tribes have the right to regulate water and air, which destroyed the economic feasibility of the project.[41] This article incorporates public domain material from websites or documents of the United States Geological Survey.This article incorporates public domain material from websites or documents of the United States Department of Labor.
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