24 May 201609:25
EVRAZ Miners Switch to Chamber & Pillar Technology
UrBC, Yekaterinburg, May 24, 2016. Miners from Mezhegeiugol Mine (a part of EVRAZ Holding) in Tyva switched to chamber-and-pillar mining, EVRAZ Holding Siberia’s PR Department reports. The new technology means that the coal bed is worked by sections, that is, chambers separated from one another with pillars supporting the roof. It takes three teams, each of them working in two sections at a time, to do the preparation work. While a combine machine is hewing coal in extraction chamber 1, miners do the walling in extraction chamber 2. This means that no equipment has to wait idle and labor