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United States of America Patent
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Jun 28, 1988
Issued Date -
N/A
app pub date -
Jul 18, 1986
filing date -
Aug 3, 1984
priority date (Note) -
Expired
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Abstract
A method for enhanced mineral recovery from a subsurface earth formation is disclosed. An outer loop borehole is formed from a vertical shaft. A leaching fluid is injected from the surface to the outer loop borehole to leach away minerals in proximity with the loop.
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