Almost all Earth materials are used by humans for something. ... What happens when a mineral resource become scarce as a result of human consumption? ... determine the concentration necessary in a mineral deposit for profitable mining.
DMME - Division of Geology and Mineral Resources - Coal
Modified from ia Division of Mineral Resources (2003), digital ... Data sources: Tonnage from the ia Department of Mines, Minerals and Energy, Division of ... and only about 65 percent of this coal was used to generate electricity.
Mining & Reclamation - NYS Dept. of Environmental Conservation
Information about mining in New York, for general audiences and mine ... The Division of Mineral Resources carries out the important responsibilities of protecting ... DEC has seized the financial security and used it to carry out the reclamation.