Article: Inspectors say electric short caused fire in Chicago bank's skyscraper home.

Byline: David Heinzmann,

Dec. 22--Faulty wiring accidentally started the LaSalle Bank building fire, causing a blaze that consumed the 29th floor of the historic skyscraper and imperiled the lives of hundreds of people working late that night, investigators believe.

Fire investigators will continue testing evidence from the Dec. 6 fire at 135 S. LaSalle St. for several months, but Chicago Fire Department officials were confident enough Tuesday to say some unknown but accidental defect caused the electrical wiring to ignite plumbing insulation and ceiling tiles.

The fire blazed for more than four hours, and more than a dozen floors above the ...

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