Circular 20/1966 & CMR 2017 – DGMS Survey Limits of Error: 100 Solved MCQs for Coal Mines Regulations Exam 📘 DGMS Notification (G.S.R. 973(E), Dhanbad, 1st Oct 2018) Issued under Reg. 64(3), Coal Mines Regulations, 2017 By Prasanta Kumar Sarkar, DGMS & Chief Inspector of Mines 🔹 1.0 Plans 📍 Accur...