METHOD OF SECTION-WISE ERECTING OF FLEXIBLE ROOF

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Bibliographic Details
Main Authors KULAKOV GENNADIJ ,SU, KOTYAKHOV VASILIJ ,SU
Format Patent
LanguageEnglish
Published 23.08.1980
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Bibliography:Application Number: SU19721796678