the role of microorganisms in coal mining philippines
The Sulfur Cycle Sources Acid Deposition and Mining Where coal strip mining takes place the pH has been found to be as low as 25 The state of Wyoming is number one in the extraction industry with coal seams 150 feet thick However unreclaimed stripmined lands occupy an area larger than Rhode Island and each day more than 400 000 pounds of sulfuric acid leaches into streams