On Monday, March 2, 1970, in Keene, New Hampshire, a Weatherman purchased two 50-pound cases of dynamite from the New England Explosives Corporation. Sometime that week, the dynamite was moved from Keene to Greenwich Village, where it was taken to the house at 18 West Eleventh Street. Oughton left Detroit and joined the group at the house. On Friday of the same week, Oughton and Robbins were in the basement assembling a nail bomb when it detonated. Cathy Wilkerson, who was in the townhouse at the time, describes her experience during the explosion, "the idea that Terry and Diana were both in the subbasement overwhelmed everything else. As I forced my attention there and to them, my lungs expanded instantaneously to draw in air and dust so I could call out."