Uncertainty in search after deadly Conn. blast

Emergency personnel work at the site of the Kleen Energy plant, seen in this aerial photo, after an explosion in Middletown, Conn., Sunday, Feb. 7, 2010. (AP Photo/Jessica Hill)

February 8, 2010 9:10:19 AM PST
A section of an under-construction power plant that exploded was too unstable to search Monday, and left questions about whether anyone was trapped inside because authorities do not have an exact roster of everyone who was on duty at the time of the blast.