Zobrazeno 1 - 1
of 1
pro vyhledávání: '"Chandra Nath Ghosh"'
Publikováno v:
International Journal of Mining Science and Technology, Vol 27, Iss 2, Pp 261-267 (2017)
In some of the coalfields in India, coal seams are only developed but no extraction of pillars is possible due to the presence of surface or sub-surface structures and also non-availability of stowing materials which leads to huge amounts of coal bei
Externí odkaz:
https://doaj.org/article/0099eab86ec443009f1dff1309f601ff
