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(4)DESIGN OF SUPPORT SYSTEM IN BORD AND PILLAR MINE
Anurag Jha
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Há 7 anos
Differnt technologies in oc mines
SATYANARAYANA I
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Há 12 anos
UG Explosives and Blasting
Krishna Deo Prasad
•
Há 7 anos
Target committee review meeting
mallareddy1975
•
Há 8 anos
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highwall mining a upcoming mining method
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