basic condition to extract coal via open pit mining,Chapter 2: The Environmental Effects of Strip Mining - The Strip .While these basic steps are relatively consistent, the environmental impacts of the . Typical open pit mining method with thick coal seam. . easily move in and out of the mining business as market conditions change. . Using this technique, operators remove entire mountaintops to reach the coal seam lying underneath it.basic condition to extract coal via open pit mining,Mining Industry: Career, Outlook and Education InformationUsing the room-and-pillar method, miners remove sections of the coal as they work the . In addition to strip mining, surface ore mines also use the open-pit mining technique. . As a result of these conditions, part-time opportunities are rare in this ... preferred; some companies also require workers to pass a basic skills test.
basic condition to extract coal via open pit mining