System for producing a uniform rubble bed for in-situ processes
Description:
A method and a cutter are disclosed for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in-situ processing. A raise drill head has a hollow body with a generally circular base and sloping upper surface. A hollow shaft extends from the hollow body. Cutter teeth are mounted on the upper surface of the body and relatively small holes are formed in the body between the cutter teeth. Relatively large peripheral flutes around the body allow material to…
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Date:
April 10, 1981
Creator:
Galloway, Terry R.
Partner:
UNT Libraries Government Documents Department