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


Topic editor

Sherwood Mine- Spokane Indian Reservation, 1978-1984

The Sherwood Mine, a uranium mine on the Spokane Indian Reservation, produced 2,100 tons of uranium ore per day between 1978 and 1984. Decommissioning of the mill began in 1992 and cleanup activities concluded in 1996. The radioactive tailings, along with mill site soils, building equipment, and contaminated debris, were encapsulated in an engineered disposal cell constructed on site. This disposal cell contained about 2.9 million tons of uranium mill tailings and an additional 350,000 cubic yards of contaminated mill site materials. The estimated radium-226 activity in the impoundment is 470 curies.