Kevin,
All I can add to what you know is that the 179th was part of the 1139th Combat Group and XX Corps.. I can trace it through to March 28th when they supported the crossing of the River Rhine at Mainz. By the 22nd April XX Corps were southeast of Nuremberg. 40 miles on they were involved in building a bridge over the Danube and on the 2nd of May they arrived at the Inn river which marked the border with Austria.
XX Corps were given the mission of making contact with the Russian Army which they did on May 7th at the Enns River.
If you can get hold of a copy of US ARMY IN WW2, THE CORPS OF ENGINEERS THE WAR AGAINST GERMANY. Published 1985 by the CMH. CMH pub 10-22 it contains many references to the 179th & xx Corps, especially page 531 on.
Colin.