EnergySolutions Inc. says it hasn't had a serious accident in more than four years at its radioactive-waste dump in Utah's west desert.
The company announced it has gone three million man-hours with any of its 270 employees suffering a lost-time accident.
A lost-time accident is an injury that takes a worker off the job.
EnergySolutions says only 17 other U.S. companies can make the same safety claim.
EnergySolutions operates a dump 72 miles west of Salt Lake City for low-level radioactive waste medical waste, contaminated soil and assorted debris from nuclear power plants and decommissioned defense depots.