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GB931545A
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Improvements in linings for mine shafts
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GB894697A
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Improvements in supports for use in mine workings
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GB899119A
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Improvements in or relating to reinforced mine roof for the galleries of underground mines
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GB865126A
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Improvements in supports for mine workings
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GB822781A
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Improvements in supports for the walls and roofs of mine workings
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GB820537A
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Improvements in supports for the walls and roofs of mine workings
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GB825194A
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Improvements in link linings for the walls and roofs in mine workings
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GB818207A
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Improvements in supports for the walls and roofs of mine workings
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GB765135A
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Improvements relating to lagging links for supporting roofs of galleries in underground mines and the like
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GB755888A
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Improvements relating to link linings consisting of wire links for roof and wall support purposes in mines
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GB714992A
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Improvements relating to walling for mines
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