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In situ recovery of shale oil
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Patent number 4,266,612
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Issue date May 12, 1981
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Occidental Oil Shale, Inc.
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Gordon B. French
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E21 - EARTH DRILLING MINING
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Raise bore drilling
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Patent number 4,095,656
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Issue date Jun 20, 1978
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Occidental Oil Shale, Inc.
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Gordon B. French
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E21 - EARTH DRILLING MINING
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In situ recovery of shale oil
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Patent number 4,043,595
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Issue date Aug 23, 1977
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Occidental Oil Shale, Inc.
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Gordon B. French
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E21 - EARTH DRILLING MINING
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