Lecture 13 : Drilling Pattern-2

[@INDRAKUSHWAHA]

Very useful .....sir

[@ifiindianfestivalimportanc9339]

Be very very useful sir..............
Open cast metal mining course bhi daliye air

[@busyworkchibatwa2754]

I in mining I learned a lot thank you very much, I want to know mudblasting

[@busyworkchibatwa2754]

Thank gays I in meaning I need blasting licence