Surface Mining is performed below the ground. - ____ Open-pit Mining involves digging a large hole in the earth. - ____ Hydraulic Mining uses air to help find minerals. - ____ Longwall Mining is a method that cuts a long wall of coal using machinery. - ____ Room and Pillar Mining requires miners to remove all the rocks. - ____ Retreat Mining involves taking coal from the inside and then leaving the area. - ____ Mining has only one method to extract resources from the earth. - ____

Mining Techniques

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