LAS VEGAS (AP) -- Authorities in Las Vegas have identified a 44-year-old construction worker killed when grout exploded in a tunnel at Lake Mead.
Clark County Coroner's Office officials say Thomas Albert Turner of Henderson died in the accident about 4:30 p.m. Monday.
A second worker had minor injuries. A spokesman with the Southern Nevada Water Authority didn't immediately have an update on his condition Tuesday.
The two men were alone in a segment of the 3-foot-diameter tunnel when material became loose and pressure sent grout flying through the air.
The tunnel is part of a troubled effort to drill a third drinking water supply line in the Lake Mead reservoir. The multimillion-dollar project has been beset by flooding and cave-ins since construction began in 2009, and work has been delayed by about two years.