In addition to the links compiled previously under the title "OER resources draft", Madeline Wagner added a helpful link and background information:

...In 2010 the Department of Labor launched the Trade Adjustment Assistance Community College and Career Training grants which required as part of the project to publish materials developed on the DOL Skills Commons repository. 
I'm not sure what OERs you were looking for but this repository covers a lot of community college technical areas (all grants had to focus on H1B industries). http://www.skillscommons.org/hlib-l

Bradley A. Scott, MLS
Electronic Resources Librarian
Mott Community College
1401 East Court Street
Flint, Michigan 48503
810-762-0405