Article: County Office Building emptied

Allegheny County's medical examiner wants to know how chemicals leaked from a barrel set for removal from the County Office Building, forcing officials to send home more than 500 workers Monday.

"Those are not chemicals that should erode through a 55-gallon drum. And yet they apparently did," said Dr. Karl Williams, whose office operates its crime lab in the Downtown building's basement.

"So that raises the question, the people who came in and packed them, they're allowed to combine some chemicals ... but they shouldn't get to a point where they cause any problems with the barrel. That's one of the angles on our investigation."

The barrel was supposed to hold chloroform and methanol, which ...

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