WASHINGTON - The U.S. Department of Transportation's Federal Motor Carrier Safety Administration (FMCSA) announced $3,876,000 in fines against American Welding & Tank, LLC (AWT) of Fremont, Ohio for violating federal hazardous materials safety standards. The company was fined for manufacturing and selling unsafe nurse tanks which are a type of cargo tank used to store and transport anhydrous ammonia; a hazardous material used in farming operations.