4. Mining or in situ disintegration of hard material
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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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Subsidence control

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

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Traction boring device using multiple trepans for producing larg

Mining or in situ disintegration of hard material – Processes – Forming blocks
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Tunnel excavation method

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

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Tunneling shield

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

Mining or in situ disintegration of hard material – Processes – Forming blocks
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Vehicle or carriage mounted materials transporting machine

Mining or in situ disintegration of hard material – Processes – Forming blocks
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Ventilation system for automated mining machines

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