Apparatus and process for hydraulic mining Patent #: 4035023
ApplicationNo. 06/489965 filed on 04/29/1983
US Classes:299/17, Jetting (e.g., hydraulic mining)175/69Combined liquid and gaseous fluid
ExaminersPrimary: Novosad, Stephen J.
Assistant: Goodwin, M.
Attorney, Agent or Firm
International ClassesE21B 43/00 (20060101)
E21B 43/29 (20060101)
AbstractA hydraulic borehole mining method and device used to recover subterranean coal, oil shale and other minerals from depths exceeding 1500 ft. where a gas lift is utilized to lift the mined slurry to the surface.
Field of SearchBreaking down by direct contact with fluid