OPERATING ENGINEERS–LOCAL 793, May 16, 2007–APRIL 30, 2010 OPERATING ENGINEERS–LOCAL 793, May 16, 2007–APRIL 30, 2010 March 9, 2010 Katrina D OPERATING ENGINEERS–LOCAL 793, May 16, 2007–APRIL 30, 2010 OPERATING ENGINEERS–LOCAL 793, May 16, 2007–APRIL 30, 2010 OPERATING ENGINEERS–LOCAL 793, May 16, 2007–APRIL 30, 2010 Operating Engineers – Local 793 – Provincial Agreement – Implementation Bulletin – Collective Agreement. Download Effective May 16, 2007-April 30, 2010. March 9, 2010 Categories:Implementation Rates