Lecture 01 : Introduction to Drilling Technology 

Thank you for drilling lectures

Best lectures 👌🏻👌🏻🙏

I request from , Mining Department that please increase the subjects for more knowledge , And mining engineering material is also not available in NPTL site Please help us

are btech mining engg. course and this certification course same??? please tell ..

Please increase the videos on more subjects |||| please sir

Thank you sir

thank you sir.

Make some more topic sir..

Sir which drill bit use tocreat hole of10 mm

I'm A mining Student of Kazi nazrul University and my Dream to be In IIT in btech mining Can I apply.Any one please Give Suggestions about this??

Make video on another subject

i can drilling and blasting certificate

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Thank you sir