Day-to-day sustainability work at St Marys Cement covers environmental reporting and communications, climate-related actions, toxic substance reporting, mine decommissioning planning, and local environmental impact management. These are operational disciplines built into how we operate, not programmes that exist separately from production.

Recent results from across the network illustrate what that work looks like in practice. The St Marys Ontario plant earned Natural Resources Canada’s ENERGY STAR for Industry certification in 2024, placing it in the top quartile for energy performance across Canada and the United States. After commissioning a new alternative fuels system, the team identified and corrected idle energy use, recovering approximately 540,000 kilowatt hours and $52,000 in annual savings. At the Charlevoix plant, approximately 40 percent of kiln energy now comes from alternative sources rather than coal or petroleum coke, through regulated co-processing of non-hazardous, non-recyclable industrial by-products. All St Marys Cement plants now produce Portland Limestone Cement (PLC), a product that uses a higher proportion of limestone in place of clinker and carries a reduced carbon profile compared to ordinary Portland cement.

At the Canada Building Materials (CBM) McMillan site, a former extraction area has been rehabilitated and returned to productive use. Employees across the network planted more than 1,000 trees on Earth Day 2025, continuing a stewardship record that stretches back decades. Learn and Evolve, one of the nine principles of Our VC Way, means measuring honestly, reporting transparently, and improving continuously. These are not isolated events; they are the accumulated record of a company that has operated with that standard in mind since 1912.