4. Mining or in situ disintegration of hard material
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Degasification of coal

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

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Degasification of coal seams

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

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Drilling, image, and coal-bed methane production ahead of...

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

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Dry dust removal device

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

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Dust control apparatus for longwall mining machinery

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

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Dust control fluids spray arm

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

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Dust control system and method of operation

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

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Dust controlling method using a coal cutter bit

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

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