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in which a series of similarly shaped props obtain an almost equal load capacity by removable devices
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Industry
CPC
E21D15/584
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21D
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
E21D15/00
Props Chocks
Current Industry
E21D15/584
in which a series of similarly shaped props obtain an almost equal load capacity by removable devices
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