Gas Drainage Technology in Fully Mechanized Caving Face with Horizontal Sublevel Mining in Steep and Extra-Thick Coal Seam
Open Access
- 1 January 2020
- journal article
- Published by Scientific Research Publishing, Inc. in Open Journal of Geology
- Vol. 10 (09), 957-970
- https://doi.org/10.4236/ojg.2020.109043