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GB1137047A
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Improvements in or relating to advancing roof support apparatus for mines
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DE1237042B
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Extension frame for mining coal in inclined and steep storage
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DE1238866B
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Valve arrangement for hydraulic pit rams
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DE1224249B
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Extension frame for a progressive pit extension
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DE1196611B
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Support for the route expansion
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DE1224248B
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Extension frame and thus feasible mining process for coal fines
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DE1243610B
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Pressure-operated pit stamp
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DE1219895B
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Two-part pit stamp
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DE1162794B
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Two-part pit stamp
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DE1183042B
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Pressure medium-operated pit support frame with alternately movable support frames and a method for loading and unloading such a support structure
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DE1160810B
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Two-part pit stamp
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DE1139458B
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Extension frame for a progressive pit extension
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DE1134048B
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Device for setting multi-part pit lining means, in particular pit rams
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ES268275A1
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Improvements in mining streams through two-piece support elements (Machine-translation by Google Translate, not legally binding)
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DE1139457B
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Clamping ring stamp
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DE1179169B
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Fully mechanical extension frame
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DE1119201B
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Clamping ring stamp
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DE1131627B
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Beaded head or foot plate for pit punches
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DE1118119B
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Multi-part ear flap for pit construction
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DE1169881B
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In the longitudinal direction divided into several essentially equal pieces cap
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