11.   Radioactive waste has risen like bread dough in a million-gallon storage tank at the Hanford nuclear reservation, provoking concerns about a possible explosion or environmental contamination.

12.   Bulging canisters of plutonium that could rupture and leak have not been adequately monitored at the Hanford nuclear reservation, an independent safety panel warns.

13.   It does classified work both at the Hanford nuclear reservation and at its main campus just south of the reservation.

14.   Russian officials have toured the formerly top secret Hanford nuclear reservation to study how their American counterparts store dangerous scrap from decommissioned nuclear submarines.

15.   The incident occurred as a range fire swept across the nearby Hanford nuclear reservation, but the security lapse was unrelated to the blaze, Koller said.

16.   The U.S. Energy Department and Fluor Hanford, the contractor managing the nuclear reservation, called the move a thrifty business decision that will make operations more efficient.