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DE19532459A1
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Gallery advance or extraction mining machine
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DE19531474A1
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Cutting and extraction equipment, for mining rock submerged in liquid
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ZA9204536B
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Curve negotiating raw ore conveyor which is movable during the conveying operation,in particular for underground operations
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DE4219097A1
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Conveyor for transporting coal in underground mine - includes flexible belt to enable it to follow curved path
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DE4219098A1
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Bulk conveyor that can be driven around curves and moved during the conveying operation, especially for underground operations
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ZA9004403B
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Self-propelled machine for mining mineral raw materials,in particular coal
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DE3911893A1
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DEVICE FOR THE CUTTER BRACKET AT THE CUTTING HEAD OF A DRIVING MACHINE
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DE3943591C2
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Control system for tunnelling appts.
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DE3908540A1
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Method for rock-dependent control of a part-cut drive-on machine
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DE3502672C1
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A scissor loading device for a tunnel boring machine on a loading apron
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DE3441950C1
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Device for holding the picks and for controlling the spray-medium feed in a cutting head for a heading machine
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DE2448753B1
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Tunnelling machine with spherical cutting head - has cutting picks spirally mounted on set of plates forming body of head
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DE2448674B1
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Rotary heading machine pick box - pick holder bosses with bearing bed and pick plates proud of core discs
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