what is sleeping holes in open cast mines? Necessity& precautions for sleeping holes
9:34
ANFO Explosives used in open cast mines .
16:56
Connection of blast holes in OC mine. concept clear video. All doubts will be cleared.
25:35
Blasting Card. Reliving hole not less than 30 cm from misfired hole. regretted for inconvenience
10:04
Secondary blasting in open cast mines
12:10
SOP FOR BLASTING OPERATION SAFETY FORTNIGHT 2022-23 MCL
25:23
Precautions to be taken while working in restricted area for recruitment also
14:51
Calculation of powder factor in open cast mines - for all competitive exam
23:22