Investigation of Houston crane collapse begins
(AP)
<p><img src="http://d.yimg.com/us.yimg.com/p/ap/20080719/capt.8bf7effeea374fb8aa87b9d01077c307.refinery_crane_collapse_txhou106.jpg?x=130&y=90&q=85&sig=h.gO4vDDXdAZ3mG.4xJVQA--" align="left" height="90" width="130" alt="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)" border="0" /> (http://us.rd.yahoo.com/dailynews/rss/topstories/*http://news.yahoo.com/s/ap/20080720/ap_on_re_us/refinery_crane_collapse)AP - Federal investigators on Saturday began trying to figure out why one of the world's largest mobile cranes toppled over, killing four contract workers and injuring seven others.</p><br clear="all"/>
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