CARLSBAD, N.M. (AP) — Emergency crews are battling a fire in the federal government’s underground nuclear waste repository in southeastern New Mexico.

Officials say a truck hauling salt caught fire about 11 a.m. Wednesday at the Waste Isolation Pilot Plant near Carlsbad, N.M.

According to a press release and a spokeswoman who answered the emergency line, all employees have been evacuated and none of the radioactive waste has been impacted. But a press release says “multiple employees” are being taken to a hospital for potential smoke inhalation.

Emergency officials say all waste handling operations are suspended and rescue teams have been activated.

The repository takes plutonium-contaminated waste like clothing, tools and other debris from Los Alamos National Laboratory and defense projects. The waste is then buried in rooms cut from underground salt beds.