'50 Cubic-Yard Shovel at Georgetown No. 12 Mine of Hanna Coal Company, Division of Pittsburgh Consolidation Coal Company: These electric shovels are used to remove the earth and rock overburden from the coal seam. In a month's time, they will each remove as much as 1,600,000 cubic yards, or some 2,400,000 tons. If this material were to be loaded into open railroad cars, it would fill some 48,000 of them.'
Subjects:
Coal mines and mining., Coal Mines and Mining--Surface Mining., Power shovels.
