valley fill n.— «Mountaintop removal is just what the name suggests. Peaks are cleared of trees. Giant steam shovels then scrape away the topsoil. The rock beneath is blasted away until the coal is exposed. Some blasts have lopped as much...
valley fill n.— «Mountaintop removal is just what the name suggests. Peaks are cleared of trees. Giant steam shovels then scrape away the topsoil. The rock beneath is blasted away until the coal is exposed. Some blasts have lopped as much...
