Bechtel

A concrete pour and structural-steel placement marked the restart of construction on Sept. 20 on the high-level nuclear-waste treatment plant and pretreatment plant at the Hanford site in Washington state. Work was halted nearly two years ago to revise earthquake design criteria. The plants are part of an $11-billion complex to treat radioactive waste stored in 177 underground tanks. Secretary of Energy Samuel Bodman certified the revised earthquake design in August.