Chardham Tunnel Project

advanced automatic jumbo drills

Equipment with cutting edge technologies is making tunneling smoother at RVNL’s mega railway project and helping contractors overcome geological complexities.

Sandvik’s DT 821 C and DT 922i advanced automatic jumbo drills are piercing through tough Himalayan rocky terrain to give shape to one of India’s mega railway infrastructure projects. P. P. Basistha visits the perilous site to see the machines at work.

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Details: NBM&CW June 2021

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