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Shotgun cartridge rock breaker

Mining or in situ disintegration of hard material – Processes – Explosive
Patent

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Single-entry mining development system

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

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Slidably displaceable duct assembly for a mining machine

Mining or in situ disintegration of hard material – Processes
Patent

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Slide assembly having retractable gas-generator apparatus

Mining or in situ disintegration of hard material – Processes – Explosive
Reexamination Certificate

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Slideboard device for underground mine face ventilation

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

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Softwall mining method and device

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

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Solar powered focusing and directing apparatus for cutting, shap

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration
Patent

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Sonic apparatus and method for slurry well bore mining and produ

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration
Patent

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Splitting apparatus and method

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration
Patent

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Stationary drill string rotary hydraulic mining tool and method

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

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Stress control mining method and apparatus

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

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Strip-auger method of mining thin seams of hydrocarbonaceous dep

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

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Subsidence control

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

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Subterranean drilling and slurry mining

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

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Subterranean drilling and slurry mining method

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

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Subterranean hydraulic mining method

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

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Subterranean mining

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

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Surface working accessory

Mining or in situ disintegration of hard material – Processes
Patent

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Surface working accessory and method

Mining or in situ disintegration of hard material – Processes
Patent

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System for and method of demolition

Mining or in situ disintegration of hard material – Processes
Reexamination Certificate

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