USA-based Green Cement Inc has appointed Grant Quasha as its CEO, as the company embarks on an international expansion drive.

Mr Quasha succeeds John T Preston, who will remain chairman of the board. Previously, Mr Quasha served as CEO and managing director of Paringa Resources, a junior mining company, and chief commercial officer of Wolverine Fuels.

The company has been developing its PozzoSlag product as a low-carbon substitute for ordinary Portland cement and is now looking to expand beyond its production facility in Texas.