All seats available through internet registration for tours of Hanford's historic B Reactor were snapped up Tuesday in about 14 hours.
Registration started at 12:01 a.m. and within one minute, 342 of the 1,847 seats were gone. About half were gone at the end of the first hour.
People who still want a seat can check back at hanford.gov for openings created by cancellations. Click on "tours" under the quick links for openings on tours of either B Reactor or the entire Hanford site.
Some seats on the B Reactor tours are reserved for phone registration at 373-2774, and unclaimed seats are given to walk-ons the mornings of the tours.
B Reactor made plutonium for the world's first atomic explosion and then the bomb dropped on Nagasaki, Japan, helping end World War II.