The Indian authorities are trying a second drilling technique to reach 40 men who are getting by on water and food sent in through a pipe.
Four days after 40 workers became trapped in a Himalayan road tunnel, the Indian authorities were still trying on Thursday to find a way through debris and rescue them, as anguished family members and colleagues protested outside to demand faster action.
The workers became stranded on Sunday about 500 feet from the tunnel’s entrance after landslides in the northern Indian state of Uttarakhand caused a partial collapse. Communication was severed, leaving the men to wait inside, unsure of what would happen.
In the hours afterward, officials established contact with the workers by sending radios through an undamaged pipe into the tunnel. Later, a bigger, 35-inch-diameter pipe was inserted through the debris to send in food, water and oxygen with the help of compressors. The authorities have said the men are safe inside the tunnel.
Officials put dozens of rescuers to work around the clock to remove debris using drilling equipment and excavators. But they abandoned those efforts after a heavy drilling machine failed to create an escape passage, with the drill causing more debris to fall in the tunnel, said Arpan Yaduvanshi, a police official in Uttarkashi District, the site of the rescue operations.
Indian officials said on Thursday that they were trying a different tack, working to deploy an advanced machine that could cut through the debris. “We are inserting steel pipes into the rubble to create a passage for the workers to come out,” said Ranjit Sinha, a top disaster management officer in Uttarkashi. The plan was for the men to crawl through the pipe, getting around the problem of falling debris.
The high-powered auger drilling machine was being assembled after it was airlifted from New Delhi by an Indian air force plane. The machine will cut through the debris at more than double the rate of the previous drilling machine, officials said, adding that they hoped to reach the workers by Friday.
India has sought advice on the operation from a company based in Thailand that helped rescue children from a flooded cave there in 2018. Officials said they were also in touch with engineering experts at the Norwegian Geotechnical Institute.
Uttarakhand attracts hundreds of thousands of Hindu pilgrims every year and has also become a major tourist attraction. In recent years, the mountainous state has experienced a boom in construction of buildings and roadways.
The trapped workers were building part of an all-weather road intended to provide quicker access to four Hindu shrines. The construction was being done in a landscape that has become increasingly fragile for large development projects as glaciers quickly melt.
Environmentalists and experts appointed by India’s top court have criticized the federal government for going ahead with the project despite their ecological concerns. Throughout the year, landslides and flooding caused by heavy rains have led to large-scale infrastructure damage, killed dozens and washed away entire villages.
In January, the authorities relocated hundreds of people after a temple collapsed and cracks appeared in large numbers of houses because of sinking land in and around the town of Joshimath in Uttarakhand.
A majority of the workers trapped in the tunnel are migrant laborers from states hundreds of miles away. Those whose relatives live nearby have been camping at the site and talking to their family members through hand-held radios. State government officials said they were in contact with other families.
Colleagues of the trapped workers who are protesting outside the tunnel said they feared for their well-being after five days of confinement.
“We want them out as soon possible,” said Lokesh Rathori, a construction worker. “They will die there soon.”