Open-pit mining - WikipediaOpen-pit, open-cast or open cut mining is a surface mining technique of extracting rock or . Heavy machinery extracting lignite from Garzweiler surface mine in Germany during 2008. . List of open-pit mines · Closure problem applied to open-pit mines for optimal extraction (not related to closing the mine); Cut-and-cover.open cast mining machinery list,Surface mining - WikipediaSurface mining, including strip mining, open-pit mining and mountaintop removal mining, is a . This type of mining uses some of the largest machines on earth, including bucket-wheel excavators which can move as much as 12,000 cubic.
open cast mining machinery list