Lecture 3 - Download as a PDF or view online for free. 8. Академич В.В.Ржевский, Профессор В.И.Шешков нар уулын ажлын шилжилтийн чиглэлийн гол баримтаа болгон ангилалыг хийсэн бөгөөд чиглэл …
2 Underground transportation 1) Classification of underground transportation Underground transportation is an important link in the mining and production of underground metal ore and non-metallic ore, and its work scope includes stope transport and …