The geological report prepared before the commencement of the Silkyara-Barkot tunnel project showed that the rock classification of the tunnel’s alignment ranges from poor to very good, the government said on Wednesday.
A total of 41 workers were trapped after a portion of the under construction tunnel collapsed on November 12 and the workers were rescued on November 28.
“The rock classification as per Geological report submitted by the Detailed Project Report (DPR) Consultant w.r.t. Silkyara Barkot tunnel alignment (length 4,531 m) ranges from Poor (Class IV) to Very Good (Class I),” Union Road Transport and Highways Minister Nitin Gadkari said in a written reply to Rajya Sabha.
