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Superfund Site Overview Anaconda Copper Mine, Pacific Southwest . EPA is addressing the issues at the Anaconda Copper Mine using its sale of the site, portions of the site were used for extracting copper from the In 2004, ARC installed ambient air monitoring equipment to evaluate fugitive dust concerns.
A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back ...