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The Green Tree facility provides and stores, digitally and in microfilm (aperture cards), [4] over 182,000 maps of abandoned mines. This repository contains maps of mine workings from the 1790s to the present day. [5] It serves as a point of reference for mine maps and other information for both surface and underground mines throughout the ...
The precise number of abandoned mines in the United States remains unknown, ranging "from the National Park Service's tally of 2,500 on its lands to the Mineral Policy Center's assessment of 560,000 abandoned mines on public and privately owned lands." [7] Many of these abandoned mines are associated with abandoned neighboring towns often ...
It is the federal agency entrusted with the implementation and enforcement of the Surface Mining Control and Reclamation Act of 1977 (SMCRA), which attached a per-ton fee to all extracted coal in order to fund an interest-accruing trust to be used for reclamation of abandoned mine lands, [1] as well as established a set environmental standards ...
Many abandoned mines pose environmental challenges, such as acid mine drainage. In Colorado alone, there are 18,382 abandoned mines. [34] The United States has had many different environmental disasters caused by these mines, such as the 2015 Gold King Mine waste water spill. Many Superfund sites are mines. As of January 2020. the EPA lists 142 ...
Iowa has more than 13,000 acres of abandoned mine land. The department has reclaimed 120 sites and currently has more than 30 sites in the planning or construction phase. There are 140 sites ...
Crews had to use hand-drawn maps from the 1940s to help navigate the recovery. ... Pennsylvania is home to one-third of the nation's abandoned land mines, the state Department of Environmental ...
SMCRA created two programs: one for regulating active coal mines and a second for reclaiming abandoned mine lands. SMCRA also created the Office of Surface Mining, an agency within the Department of the Interior, to promulgate regulations, to fund state regulatory and reclamation efforts, and to ensure consistency among state regulatory ...
Mine reclamation is the process of modifying land that has been mined to restore it to an ecologically functional or economically usable state. Although the process of mine reclamation occurs once mining is complete, the planning of mine reclamation activities may occur prior to a mine being permitted or started. [1]