Cemstone Products Co. in Mendota Heights, Minn., has acquired Minnesota neighbors Rochester Brick and Mankato Brick, which distribute clay and concrete masonry, natural stone and precast faux stone veneer, and landscaping products. The businesses serve southern Minnesota and are located within two hours of Cemstone's Twin Cities base. They are continuing with existing names, and sales, service and support staff. Rochester Brick and Mankato Brick extend the retail and dealer business Cemstone has established with 14 Contractor Supply Stores covering Minnesota, Wisconsin and northern Iowa.