Vertical drilling of 19.2 metres done on first day to create escape passage for 41 workers trapped inside Silkyara tunnel: Official.

Vertical drilling of 19.2 metres done on first day to create escape passage for 41 workers trapped inside Silkyara tunnel: Official.
  • Country:
  • India

Vertical drilling of 19.2 metres done on first day to create escape passage for 41 workers trapped inside Silkyara tunnel: Official.

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