ATLANTA – Huber Engineered Materials, a division of J.M. Huber Corp., announced a price increase for its industrial calcium carbonate and barium sulfate products. The price increase does not apply to Huber’s food and USP calcium carbonate grades. The increase is effective April 18, 2011, or as current contracts allow. List prices will increase an average of six percent for calcium carbonate products and an average of nine percent for barium sulfate products, depending on product grade and packaging.