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Shearing machine with roof-bolt drilling and setting devices

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

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Shield advancing machine

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

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Shield assemblies for installation in under-ground roadways and

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

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Shield tunnel boring machine

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

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Shield tunneling machine

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

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Shield tunneling machine

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

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Shield tunneling machine

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

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Shield tunneling machine and earth removing apparatus therefor

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

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Shield unit

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

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Shield-type tunneling machine with toggle controlled bit plates

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

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Shielded cutterhead with small rolling disc cutters

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

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