India, July 10 -- On Wednesday, thirty-one workers were rescued following the collapse of one industrial tunnel in Wilmington, said the Los Angeles Fire Department (LAFD).

The LAFD mobilized a major emergency operation, sending more than 100 responders, including all of its elite Urban Search and Rescue teams, to the site on the 1700 block of South Figueroa Street.

The collapse took place deep within the Los Angeles Effluent Outfall Tunnel, which is currently under construction as part of the $630.5 million Clearwater Project.

L.A. County Supervisor Janice Hahn assured that every worker was brought to safety, and there were no visible injuries among the 31 workers. The workers had to scale a heap of soil approximately 12-15 feet high s...