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Upcoming Events

Monday, March 26, 2018 at 9:00 AM OSSGA Generic First Line Supervisor Training

OSSGA Office, Mississauga, ON

Thursday, March 29, 2018 at 9:00 AM OSSGA Common Core Surface Miner Training

OSSGA Office, Mississauga

Thursday, April 12, 2018 at 8:30 AM OSSGA Aggregates 101 Training in Sudbury

Holiday Inn Sudbury Hotel

Saturday, April 14, 2018 at 8:30 AM OSSGA Spring Tune-up: Operations, Safety & Service Training

Thorold, Ontario

Thursday, May 3, 2018 at 8:30 AM OSSGA Quality Control Training

Lafarge Dundas, Only 12 spots available

The Hole Story


OSSGA is understood, acknowledged and supported by the government, public and others for providing essential materials, in a responsible manner, that builds a stronger Ontario. We will support the achievement of this vision through a leadership focus on seven key pillars:

  1. Securing the long-term availability of valuable aggregate resources.
  2. Environmental stewardship. OSSGA will be the model of, and the voice of, environmental sustainability and stewardship. We will advocate for consistent application of best operating standards and for environmentally responsible resource use.
  3. Leading the development of our industry. We are proactive. We are bold in our leadership efforts to guide the industry into the future. We seek to work productively with our partners.
  4. Membership engagement and recognition of the value they receive from the OSSGA.
  5. Public awareness and recognition of the need for a responsibly managed aggregate industry.
  6. Successfully affecting the development and implementation of government initiatives that promote the viability of the industry.
  7. Building strong and effective organizational arrangements.


OSSGA works in partnership with government and the public to promote a safe and competitive aggregate industry contributing to the creation of strong communities in the province.
OSSGA promotes the responsible use of these resources by encouraging stewardship and the maintenance and enhancement of the environment.