Three employees at a Wenham, Mass., worksite were performing residential roofing work on a ladder jack scaffold when the wooden plank on which they were standing snapped, causing them to fall 20 feet to the ground. An OSHA investigation found that the wooden plank was not graded for scaffold use and its invoice made clear it was not for scaffold use. Other hazards noted during the OSHA inspection included deficiencies with the scaffold’s components and structure and lack of fall protection for the employees.