OREANDA-NEWS. May 22, 2012. A new belt conveyer has been put into operation at the conveyer coal heading A-7 of the Butovskaya mine (а subsidiary of OOO Koks-Mining). Unlike the scraping transporters SR-70 which was used at the mine before, this new belt conveyer will be operated with higher productivity rates and longer operational life. A continuous overburden transportation system is functioning now in the mining face thus contingency situations there will be reduced to the minimum. The investments to the belt conveyer acquisition is more than RUR50 million.