General Science

  • noun in strip mining, the soil and rock lying on top of a layer of coal
  • noun a mineral which is dug away from the surface of the land to expose the coal or mineral below


  • A mantle of soil, rock, gravel, or other earth material covering a given rock layer or bearing stratum.
  • An unwanted top layer of soil that must be stripped away to open access to useful construction materials buried beneath it.