Dive summary:

• A relatively minor construction accident in Philadelphia is getting attention because of the death of six people in a demolition collapse June 5.
• Only one worker was hurt when ironworkers on the fifth floor of a seven-story science building going up at Temple University were dropped to the fourth floor on July 11, and officials said he was conscious and alert when taken to a hospital, complaining of lower-body pain.
• After preliminary inspections, officials said it appeared that the cause was a sheared bolt in the steel frame, allowing beams and decking to fall.

From the article:

“Initial indications are that a failed connector on the fifth floor of the structure caused a beam to fall,” according to a statement from the New York City office of Turner Construction, project construction manager and agent for Temple University. ...