[email protected]
  1. Home>>
  2. open pit strip mining advantage and disadvantages introduction-mining equiments supplier

open pit strip mining advantage and disadvantages introduction-mining equiments supplier

Open Pit Mining. Open pit mining is similar to area mining. The technique is common in the western United States (and other parts of the world) where very thick — 50 to 100 foot — coal seams exist. Open pit mines are usually large operations. Production levels may exceed 10 million tons of coal per year.. The thick coal seams found at these large mines ensure that the amount of land ...