As the last of 41 workers trapped for 17 days emerged this week, there are growing calls to reemphasize safety and geology risks as the nation embarks on a rapid infrastructure buildout.
Following a partial tunnel collapse in May at Hanford’s Plutonium Uranium Extraction Plant, a facility unused since the 1980s, a report from DOE and its contractor for the area, CH2M Hill Plateau Remediation Co., says a second facility tunnel, which once processed chemicals needed in nuclear production, does not meet current standards.
The failure of bolts anchoring suspender rods likely sent tons of precast concrete ceiling panels crashing onto the roadway in a tunnel in central Japan on Dec. 2.
