Abstract: At approximately 8:30 a.m. on January 27, 1995, Employee #1, a motorman of White River Nahcolite Minerals Limited Liability Company, in Rifle, CO, was looking down through the drilling floor with a 500 lb kelly bushing suspended about 8 ft over his head. The crew, supervised by Employee #1's father, was attempting to line up an off-center drilling stem. A derrickman, who was Employee #1's brother, had left the catline which supported the bushing unattended and improperly secured. The bushing fell onto Employee #1 and crushed his skull, killing him. Causal factors include: the catline was unattended and unsecured; Employee #1 was under a suspended load; and Employee #1 and the derrickman may not have been properly trained.