4. Mining or in situ disintegration of hard material
  5. Tunnel recovery of fluid material

John L. Shafer

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Method and apparatus for determining conformity of a predetermin

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
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Process for the production of light stable antimonous oxide by h

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
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Recovery of magnesia from oil shale

Mining or in situ disintegration of hard material – Tunnel recovery of fluid material
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Profile ID: LFUS-PAI-P-486333

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