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PL274147A1
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Arrangement of material handling equipment adapted to carry a away both overburden and mined useful mineral
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PL273440A1
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Method for protecting underground waters against negative effects of water flow through a pollution source
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PL273439A1
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Method for dump drainage
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PL271913A1
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A joint of runners of a belt conveyor
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PL271914A1
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A fish-plate of a joint of a belt conveyor runners
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PL271863A1
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Method of regenerating belt conveyor belts
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PL271831A1
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Mobile two-section slope conveyor
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PL271457A1
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Reloading apparatus
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PL269846A1
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Slewing gear in particular for a dumping conveyor
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PL269367A1
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Apparatus for protecting a production well against backfilling
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PL269654A1
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Method of venting air from piston head side of greasing gun and air venting system therefor
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PL269382A1
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Greasing apparatus
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PL269383A2
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Method of mending conveyor belt carcasses
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PL269397A1
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Electric circuitry for supplying power,operating and monitoring operation of a lubricating system
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PL268862A1
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Ripper bucket in particular for a bucket-wheel excavator
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PL268818A2
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Axial bearing,especially for deep-well pump systems
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PL258117A1
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Method of and system for protection of deep-well immersed pumping units
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PL257853A1
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Method of mining useful minerals through bore-holes and apparatus therefor
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PL257660A1
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Mobile dumping conveyor body
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PL257516A1
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Coupling piece for hydraulic hoses
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