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pro vyhledávání: '"Oisalu, Ott"'
Autor:
Oisalu, Ott, Lõhmuste, Taavi
Oil shale industry in Estonia is looking at other mining technologies as alternative to strip mining and room and pillar mining methods. One such alternative to the room and pillar method is the punch-longwall mining method. Enefit Kaevandused AS, on
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65372
