Workers at the 'C' Tank Farm at the Hanford Nuclear Reservation, near Richland, Wash.
The "C" tank farm is shown during a media tour of the Hanford Nuclear Reservation near Richland, Wash.
Rows of chambers holding intermediate-level radioactive waste in shallow pits at the Bruce Power nuclear complex near Kincardine, Ontario.
Radioactive waste sealed in large stainless steel canisters is stored under five feet of concrete in a storage building at the Savannah River Site near Aiken, S.C.
Nuclear waste is stored in underground containers at the Idaho National Laboratory near Idaho Falls, Idaho.
People leave the south portal of Yucca Mountain during a congressional tour Saturday, July 14, 2018, near Mercury, Nev.
University of Toronto professor Ted Sargent stands near the north portal of Yucca Mountain during a congressional tour Saturday, July 14, 2018, near Mercury, Nev. Several members of Congress toured the proposed radioactive waste dump 90 miles northwest of Las Vegas.