Exhibit News

Particles on the Wall is excited to announce upcoming exhibits!


The REACH Museum

June 29 - October 21, 2016.

The REACH Museum
1943 Columbia Park Trail
Richland, WA 99352
Sun & Mon: Closed
Tue - Sat: 10:00AM-4:30PM


REACH POTW Flyer.jpg


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Particles on the Wall 2nd edition from Healthy World Press


Most of Hanford's air releases were from the chemical process used to separate plutonium and uranium from fuel rods. Some of the air releases came from the nuclear reactors. The major radioactive releases occurred between 1944 and 1957, with the largest releases were between December 1944 through 1947, when there were no filters on the stacks of the separations plants. Left picture: B-reactor.

Current Estimates of Radiation Released into the Air by Hanford, 1944-1972

Iodine-131: 739,000 curies
Ruthenium-103: 1,160 curies
Ruthenium-106: 388 curies
Strontium-90: 64.3 curies
Plutonium-239: 1.78 curies
Cerium-144: 3,770 curies