"WAM - Corundum Free Refractories" Westmoreland Advanced Materials Manufactures High Quality Castables, Shotcretes, Gun Mixes, and Low Cement & Ultra-Low Cement Compositions using latest Technology and Raw Materials. We also Custom Toll Blend & Package Dry Mortars. Westmoreland Advanced Materials is a problem solving organization that prides itself in setting high standards, and delivering today and tomorrow's innovative solutions to the materials industry. Our WAM AL II Family of Products WILL Improve your Bottom Line. Our Plant is Located Southeast of Pittsburgh, Pennsylvania, on the Monongahela River providing Quick Access to Major Highways and to Rail & Barge Terminals.