Ontario Stone, Sand & Gravel Association (OSSGA)
www.ontariossga.com

The Aggregate Resources Act (ARA)
http://www.e-laws.gov.on.ca/html/statutes/english/elaws_statutes_90a08_e.htm

The Aggregate Resources Act, Ontario Regulation 244/97
http://www.e-laws.gov.on.ca/html/regs/english/elaws_regs_970244_e.htm

The Ministry of Natural Resources (MNR)
www.mnr.gov.on.ca/en