'The nature of Hanna Coal's surface mining operations is illustrated here. Among the company's seven strip shovels for removing the overburden and uncovering the 52-inch vein of coal, are four giants weighing in the neighborhood of 1,800 tons each, equipped with booms up to 120 feet long, and with scoops having a capacity up to 50 cubic yards. Each of these large shovels can move enough stone and earth per year to cover a football field more than a mile high.'
Subjects:
Power shovels., Coal Mines and Mining--Surface Mining., Strip mining.
