CHICAGO, Illinois, March 4 (TNSAwa) -- The American Institute of Steel Construction issued the following news release: The American Institute of Steel Construction is pleased to recognize more than 70 steel fabricators and erectors for their outstanding safety records in 2021. Most of this year's winners have earned the Institute's top safety award, the Safety Award of Honor, which is presented for a perfect record of no disabling injuries (DART=0--see below for more info about DART data). "A  more