4. Mining or in situ disintegration of hard material
  5. Hard material disintegrating machines
  6. With material-handling means

Ronald W. Keen

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Conveyor lift and service shoe assembly and method of moving

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent

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Material gathering device

Conveyors: power-driven – Conveyor having means specialized for collecting a load from... – Power-driven feed means
Patent

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Method and apparatus for suppressing dust and frictional ignitio

Mining or in situ disintegration of hard material – Processes – Mine safety
Patent

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Stabilizing assembly for a mining machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent

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