4. Mining or in situ disintegration of hard material
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Abrasive jet manifold for a borehole miner

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid
Patent

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Abrasive surface treatment apparatus having removable blocks

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent

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Acceleration of hydrocarbon gas production from coal beds

Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent

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Acid preinjection to decrease instantaneous acid consumption in

Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent

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Adjustable bucket for an earth boring machine

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

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Adjustable handles for road surface cutting saws

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent

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Adjustable planer system

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Reexamination Certificate

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Adjustable plunge-cut road saw mechanism

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent

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Advance mechanism, preferably for mining machines

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent

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Advance method and apparatus for mining

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
Patent

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Advance/retreat cutting miner and method

Mining or in situ disintegration of hard material – Processes – With material-handling
Patent

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Advance/retreat cutting miner with simple conveyor

Mining or in situ disintegration of hard material – Processes – With material-handling
Patent

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Advanced slot stress control method of underground excavation

Mining or in situ disintegration of hard material – Processes – Forming blocks
Patent

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Advancing apparatus for a multi-unit mining machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent

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Advancing apparatus for coal-mining machine in underground mine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent

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Advancing system for coal winning machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
Patent

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Air diversion and dust control system for longwall shearers

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent

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Anchor boring unit

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

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Anchoring apparatus for a mining installation

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
Patent

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Anchoring apparatus for anchoring a mining installation

Mining or in situ disintegration of hard material – Processes – Forming blocks
Patent

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