On June 27, 1934, a huge explosion at the Denn Powder Company in the community of Lacey resulted in 11 deaths. The company produced dynamite, which was in great demand for logging, stump clearing, mining, and demolition. The damage from the explosion was so extensive that it was never possible to reach a definitive conclusion on its cause. Photograph selected and captioned by Deborah Ross on behalf of the Olympia Historical Society and Bigelow House Museum. For more information, visit us at Vibert Jeffers photograph, 1934, Susan Parish Collection, Southwest Regional Archives