ST. PAUL, Minnesota, Sept. 7 -- The U.S. Army Corps of Engineers-St. Paul District issued the following news release: The U.S. Army Corps of Engineers, St. Paul District, awarded a $2.5 million contract to Dubuque Barge and Fleeting Service Company doing business as Newt Marine Service out of Dubuque, Iowa, to make repairs to the upper guidewall at Lock and Dam 2, near Hastings, Minnesota. Guidewalls are long extensions of the lock walls, in either the upstream or downstream direction, that ar  more