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pro vyhledávání: '"Yu. E. Borisov"'
Publikováno v:
Soviet mining science. 12:319-323
Since the fifties, attempts have been made in the Kuzbass to work thick inclined seams by pillars to the dip using shield supports, including shields of streamlined and parabolic form on rollers, tracks, etc. However, owing to technical imperfections
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eee3f6a1c10eb4c13e78ab3e4a73986
https://doi.org/10.1007/bf02594878
https://doi.org/10.1007/bf02594878
