A suspected gas explosion on Monday triggered a collapse inside a tunnel that was under construction at a hydropower project in India’s northeastern Himalayan state of Sikkim, leaving at least 11 people dead and 14 missing, officials said on Tuesday.
State Chief Minister Prem Singh Tamang, who visited the disaster site near the Chinese border, said the explosion was triggered by a build-up of methane gas.
At least 27 people were trapped, including some who entered the tunnel to help with rescue...