The UK provides one of the strongest examples of what can be achieved in terms of sustainable aggregate resource management, as was acknowledged in several areas of the SAROS report and by MNR. [...] In 2009, Ontario’s Ministry of Natural Resources (MNR) completed an update of the 1992 State of the Aggregate Resource in Ontario Study (SAROS), which it has stated will inform the development of a broader provincial aggregates strategy.2 Over the years, MNR has also indicated that it is committed to the development of an aggregates conservation strategy in collaboration with other provincial mini [...] The goals of the SAROS update included: • updating information about the supply and demand for aggregates in the province; • determining the amount of aggregate remaining in existing reserves; • identifying possible constraints on the long term aggregate supply; • developing a methodology for creating an inventory of material with potential to be recycled; • providing an overview of the social, ec [...] Gravel Watch raised questions regarding: the scope of analysis applied to the alternatives and transportation analysis in SAROS Paper 2: Future Aggregate Availability and Alternatives Analysis; the extent to which economic, social and environmental costs and benefits of aggregate were accounted for in SAROS Paper 3: The Value of Aggregates; the conclusions drawn regarding the amount of aggregate r [...] Class 4-7 soils generally have more limitations in their ability to support agriculture.30 31 Using maps and data describing the pre-extraction features of the licenced sites and the future rehabilitation plans provided by MNR, the authors of SAROS Paper 3: The Value of Aggregates projected what the net land use changes would be across the 31 licences in the sample over time.