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  1. 1
    METHOD FOR PROTECTION OF DEVELOPMENT WORKINGS USED REPEATEDLY IN COAL MINING

    METHOD FOR PROTECTION OF DEVELOPMENT WORKINGS USED REPEATEDLY IN COAL MINING von ZHIKHAREV SERGEJ YA,SU, PIKHKONEN LEONID V,SU

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  2. 2
    METHOD OF DETERMINING BOUNDARIES OF FROZEN SOIL IN A WELL

    METHOD OF DETERMINING BOUNDARIES OF FROZEN SOIL IN A WELL von FILATOV ALEKSEJ O,SU, FILATOV ALEKSANDR O,SU, KORSHUNOV GENNADIJ I,SU, PIKHKONEN LEONID V,SU

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