Tender For geophysical investigation of the pernem tunnel to ascertain the starta behind the lined portion and identify the development of any cavity in the sen/mao section of konkan railway in goa state (comp no. 70582)
Tender For geophysical investigation of old goa tunnel to ascertain the starta behind the lined portion and identifiy development of any cavity in sen/mao section of konkan railway in goa state (comp no 70591)