Ash Grove family of companies, including Ash Grove Cement Company, Ash Grove South Texas, LLC, Sapphire Americas LLC, Oldcastle Cement Holdings, Houston Cement Company, and Suwanee American Cement Company, is one of North America’s leading cement manufacturers, with a legacy of innovation and excellence dating back to 1882. Performs chemical analyses of raw materials, raw mill, kiln feed, clinker and cement, process additions for production, and quality control following plant SOPs, American Society for Testing and Materials (ASTM) and American Association of State Highway and Transportation Officials (AASHTO) methods.