Overview
- Emergency crews reached the remote Canyon Tunnel work site near Knights Ferry after a 3:42 p.m. Tuesday call, where a section inside the tunnel came loose and trapped workers.
- Rescuers found 35-year-old geologist Twyla Capurro deceased and recovered her body around 10:04 p.m. after an hours-long technical operation that used drones and remote cameras.
- One worker was taken to a hospital with minor to moderate injuries, and a third person caught in the incident was unhurt.
- The South San Joaquin and Oakdale irrigation districts halted all construction and referred to the event as a rock fall as Cal/OSHA opened a probe into how it happened.
- The $80–$84 million project is building about 12,000 feet of bypass tunnel to keep water deliveries reliable when the older Joint Supply Canal is blocked by rock slides, with completion targeted for 2028.