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Early surface mining in Indiana
Recent surface mining in Indiana
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180-cubic-yard shovel acquired acreage acres Akremite AMAX Coal Co.’s ammonium nitrate ANFO areas Ayrshire Collieries Corp began Big Muskie boom Boonville bucketwheel excavators bulldozers churn drills Clay County Coal Age Coal Co.’s Ayrshire coal companies Coal Corp coal in Indiana coal industry coal mining coal seam coal-producing cost cubic yards detonating developed Dugger early electric shovels Enos equipment farming feet of overburden Figure Geological Geologist Gibson Counties Handloading haulage highwall holes Illinois increased installed Kentucky large stripping shovels largest shovels loading coal Lynnville machines Maumee Collieries maximum merger Midwest million tons mines in Indiana Ohio OPERATIONS IN INDIANA output overburden Peabody Coal Peabody’s percent Pike County production of surface-mined railroad reclamation laws remove overburden rock rotary drills Sherwood-Templeton shovels and draglines state’s steam shovels steam-powered strip mines strip-mine strippable Sullivan surface mines surface-mined coal trucks U.S. Bureau underground mining unit trains Vermillion County Warrick County western