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HU910064D0
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Method for decreasing surface sinking being under mine hole
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HUT53684A
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Apparatus for supporting mine area
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HUT53685A
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Appartus for supporting mine spaces
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ES2012179A6
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Method for draining a subterranean space, especially a mine
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PL275926A1
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Method of dewatering underground cavities in particular mines
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HUT51990A
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Device for stretching the rubber belting of practically horizontal conveyor of rubber belting
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HUT56171A
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Apparatus for grouped operating boilers having sucking ventilator
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HUT49711A
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Method and device for predicting unfavourable phenomens of rock pressure
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HUT48944A
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Hydraulic working cylinder particularly hydraulic prop used in mining
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HUT48710A
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Apparatus for setting-in ring support consists of arched pieces in mine areas
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HUT47167A
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Method for dewatering underground space particularly mine cave
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HU197709B
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Process for chemical improving of soil containing active substance
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HUT43680A
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Hydraulic working cylinder particularly hydraulic support used at mining
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HUT40224A
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Back member and top structure of mine support
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HU187872B
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Method and apparatus for level-break mining of high bed
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