7:21

Key plan & Off set plan

15:25

MCQ on duties& responsibilities of overman& Sirdar in O/C working Reg 47(6)&48(5)

24:13

Conceptual MCQ Part 1 by Bele sir for SECL, BCCL etc

10:08

Regulation 160 of CMR 2017 - velocity of air current

19:25

L 58 Nonel Blast initiation

15:47

Regulation 169 Determination of percentage of inflammable gas& of environmental conditions

23:15

Definitions from CMR 2017 Part 1

16:41

Setting of support - props & under set prop (Reg124 of CMR 2017)