4. Mining or in situ disintegration of hard material
  5. With separation of materials
  6. Separation below surface of earth or water
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Obolensky Vsevolod

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Oil Sands Underground Mining Corp.

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Oil Sands Underground Mining Corporation

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Oil Sands Underground Mining, Inc.

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Oil Stands Underground Mining Corp.

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OSUM Oil Sands Corp.

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OSUM Oil Sands.Corp

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