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Mining and bolting method and apparatus

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining apparatus and method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining machine with roof bolting apparatus

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining machine with roof bolting apparatus

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

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

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining method and apparatus

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining method and apparatus

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining method for working large-scale mineral deposits by the ca

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Mining or underground quarrying method and installation for impl

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Molding pillars in underground mining of oil shale

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Pre-bolting system for underground mines

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Process for the extraction of thick coal seams

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Radial mining method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Radial mining method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Safety wall cutting through method employed in long wall mining

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Shield system for coal mining

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

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Shield tunneling machine and method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Shield tunneling method and machine therefor

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
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Shortwall mining of trona

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