US: Summit Materials has announced that its cement plant in Hannibal, Missouri, has been converted to produce 100% Portland limestone cement (PLC). Since 4 August 2022, the plant has only produced PLC, which has embodied CO2 emissions around 10% lower than ordinary Portland cement (OPC). The company said that the conversion marked an important step towards reaching its overall 2030 and 2050 decarbonisation targets, which were announced in April 2022.
The Hannibal plant is the company's second conversion to PLC in 2022. It earlier converted Continental Cement's Davenport plant to 100% PLC production in April 2022.