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  1. 1
    METHOD OF SPLITTING A COAL BED OF LARGE DEPOSITION AREA FOR LONGWALL WORKING PURPOSES

    METHOD OF SPLITTING A COAL BED OF LARGE DEPOSITION AREA FOR LONGWALL WORKING PURPOSES von KRYJ KRZYSZTOF, SLIWA JAN, NOWAKOWSKI ADAM, ZAWADZKI WIESLAW, SZAFARCZYK JOZEF, SPYRKA LESZEK, PROCHASEK ZBIGNIEW

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  2. 2
    METHOD OF LOCALLY DEMETHANISING THE LOW-METHANE UNDERGROUND MINE WORKINGS

    METHOD OF LOCALLY DEMETHANISING THE LOW-METHANE UNDERGROUND MINE WORKINGS von FOCHTMAN WITOLD, KUBEK FRANCISZEK, NOWAK EMIL, HERMAN JAN, SPYRKA LESZEK

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  3. 3
    METHOD OF LOCALLY DEMETHANISING THE LOW-METHANE UNDERGROUND MINE WORKINGS

    METHOD OF LOCALLY DEMETHANISING THE LOW-METHANE UNDERGROUND MINE WORKINGS von FOCHTMAN WITOLD, KUBEK FRANCISZEK, NOWAK EMIL, HERMAN JAN, SPYRKA LESZEK

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  4. 4
    METHOD OF SPLITTING A COAL BED OF LARGE DEPOSITION AREA FOR LONGWALL WORKING PURPOSES

    METHOD OF SPLITTING A COAL BED OF LARGE DEPOSITION AREA FOR LONGWALL WORKING PURPOSES von KRYJ KRZYSZTOF, SLIWA JAN, NOWAKOWSKI ADAM, ZAWADZKI WIESLAW, SZAFARCZYK JOZEF, SPYRKA LESZEK, PROCHASEK ZBIGNIEW

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