Abstract: Employees #1 and #2, the owner of a house moving company and his employee, were working beneath a two-story wood frame house that was being prepared for moving. They were removing lower level bearing walls and other structural supports. A 52 ft long, 10 in. by 12 in., double I-beam, which was serving as a temporary support, failed under its load at a previously existing burn cut. The cut went completely through the upper flange and 4 1/2 in. down into both webs. The second story fell from its temporary supports, killing Employees #1 and #2. The date or purpose of the beam cuts was not known, but a similar, unfailed cut existed in a companion beam. The failed beam (and the companion beam) was supporting the elevated structure at its original level when the beam break occurred. The building fell in excess of 8 ft, trapping Employees #1 and #2 at their work places.