Particles on the Wall, an exhibit combining visual and literary arts, science and historical artifacts to explore the impacts of the Hanford nuclear reservation on our region and the world comes to Oregon for the first time. Opening reception includes awards ceremony for the 5th annual Greenfield Peace Writing Contest for Oregon high school students who this year wrote about why Hanford matters along with music, food, wine and commentary by contributing artists. Opening Reception, May 3, 2013, 6:00 pm to 8:00 pm. Exhibit runs Through June 14. Open to the public weekdays 8:30 am to 5:30 pm and Sundays 8:30 am to 2:00 pm. Opening reception and exhibit are free and open to the public. Donations to support Oregon PSR accepted at the reception.