Upcoming Events

Monday, October 2, 2023 OSSGA Generic First Line Supervisor Training - IN PERSON
Thursday, October 5, 2023 OSSGA Common Core Training - INPERSON
Thursday, October 12, 2023 OSSGA Quality Control Training - IN PERSON
CBM Codrington
Monday, October 23, 2023 OSSGA Train the Trainer Program - IN PERSON


Thursday, October 26, 2023 OSSGA Aggregates 101 - IN PERSON
OSSGA Office
Friday, October 27, 2023 OSSGA Aggregates 201 - IN PERSON
Gravel Facts

Our Organizational Structure

The Ontario Stone, Sand & Gravel Association is directed by elected Officers and a Board of Directors. Association committees, comprised of volunteers, complement the services provided to the membership. The Executive Director and staff handle the routine business affairs of the Association and regularly report to the Board.


  • Chair of the Board:  Rob Pierce, R.W. Tomlinson
  • Vice Chair of the Board: Jim Petrella, Dufferin Aggregates, a Division of CRH Canada Group Inc.
  • Treasurer: John Mackay, Aecon Construction & Materials
  • Immediate Past Chair: Ryan Wall, Walker Aggregates and Construction
  • Executive Director:  Norman Cheesman (ex-officio Board Member)

Active Directors  

  • Mike Andrighetti, Ethier Sand & Gravel Limited
  • Blake Arnill, Seeley & Arnill Construction
  • Ron Brent, Brent Quarries
  • Ryan Held, CBM Aggregates
  • Robert Mantha, Walker Aggregates and Construction
  • Dwayne McKenzie, Nelson Aggregate Co.
  • Mohamed Mousa, Dufferin Aggregates, a Division of CRH Canada Group Inc.
  • Lauren Mulkerns, Brampton Brick
  • Matthew Ruggieri , Lafarge Holcim Canada Inc.  
  • Ken Zimmerman, Miller Paving

Ex-Officio Active Directors

  • Scott Boyle, Miller Paving

Associate Directors

  • John Newton, Austin Powder
  • Kim Mullin, Wood Bull
  • Brian Sulley, RWDI