Pillar Design Principles in Bord and Pillar Mining – DGMS Exam Guide Pillar Design Principles in Bord and Pillar Mining – DGMS Exam Guide 🏗️ Pillar Design Principles – DGMS Exam Notes Introduction In the Bord and Pillar mining method, coal is extracted through a grid pattern of galleries (bords) an...
DGMS Man Winding Speed & Haul Road Standards – Complete Notes for Exam GSR 975(E) & GSR 976(E) 🔹 1. G.S.R. 975(E) – Man Winding Speed in Shafts 📏 Maximum Rope Speed during Man-Winding (Normal Shafts) Depth of Shaft Maximum Rope Speed (m/s) Remarks Upto 100 m 2.0 m/s Automatic contrivance not requi...