The article examines the U.S. industrial magnesium industry in 2015. Topics mentioned include production of synthetic deadburned magnesia and fused magnesia, uses of reactive grade magnesia like manufacture of magnesium salts, environmental applications, and fertilizer, and the magnesium hydroxide, which is synthetically produced from seawater or brine. The acquisition of Ablemarle's Martinswerk chemical business by Huber Engineered Materials is also mentioned.