Horizontal remote mining system, and method
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United States of America Patent
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Mar 9, 1999
Grant Date -
N/A
app pub date -
Nov 12, 1996
filing date -
Nov 12, 1996
priority date (Note) -
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Abstract
A horizontal remote mining system comprising a water jet cutting head, down hole crusher, jet pump, and guidance system for orchestrating select excavation of a horizontal borehole. The system is assembled on the end of a drill string comprised of multiple compartments accommodating various water pressures and functions in association with the remote excavation process. Selective tubing is also utilized to facilitate movement of air and ventilation of the borehole. In this manner, relatively thin coal seams can be economically mined.
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