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DE1261459B
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Tunneling machine
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Schraem device
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Improvements in mineral mining apparatus
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Improvements in mineral mining apparatus
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Improvements in and relating to air compressors
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An improved mineral ripping machine
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Improvements in air legs for rock drills
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Improvements in heat exchangers
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Improvements in and relating to mineral mining machines
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Improvements in and relating to mineral mining and loading machines
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Improvements in and relating to mineral mining and loading machines
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Improvements in and relating to hydraulic power transmission systems
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Improvements in and relating to self-aligning conveyor belt idlers
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An improved cutter head for a mineral-mining or earth-boring machine
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GB741903A
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An improved cutter head for a mineral-mining or earth-boring machine
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GB741904A
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An improved cutter head for a mineral-mining or earth-boring machine
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GB742204A
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An improved cutter head for a mineral-mining or earth-boring machine
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Improvements in and relating to mining machine heads
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Improvements in or relating to chain conveyors
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Improvements in or relating to coal cutter picks
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