National News

Investigators arrive at site of crane collapse

A collapsed crane is visible within the LyondellBasell Houston Refinery, Friday, July 18, 2008 in Houston.. One of the nation's largest mobile cranes collapsed at a Houston oil refinery Friday, killing four workers and injuring seven others in the latest of several fatal accidents that have raised concerns about the safety of construction cranes.(AP Photo/The Houston Chronicle, Steve Ueckert)