Horsehead Plans Zinc Oxide Price Increases for Second Half of 2013

Horsehead Holding Corp.

("Horsehead"), today announced that its zinc oxide subsidiary, Zochem, Inc. expects prices to rise on base and specialty grades of zinc oxide products through the second half of 2013 into 2014. "As a result of increased zinc metal premiums and stronger than expected demand for specialty grades, we expect oxide premiums to increase by about five percent. We continue to see increasing demand for these value-added products as the general economy recovers and the quality needs of the specialty chemical industries we serve continue to evolve. As previously announced, significant investment has been made in the expansion of the Zochem facility as well as the development of the management systems, such as compliance with international Good Manufacturing Practices (GMP) for active pharmaceutical ingredients," said Jim Hensler, President & CEO. “In response to this increased demand, Zochem's expansion efforts have been accelerated but oxide inventories are tight and lead-times continue to push-out.” About Horsehead Horsehead Holding Corp. (“Horsehead”)

is the parent company of Horsehead Corporation, a leading U.S. producer of specialty zinc and zinc-based products and a leading recycler of electric arc furnace dust; The International Metals Reclamation Company (“INMETCO”), a leading recycler of metals-bearing wastes and a leading processor of nickel-cadmium (NiCd) batteries in North America; and Zochem Inc., a zinc oxide producer located in Brampton, Ontario. Horsehead, headquartered in Pittsburgh, PA, employs approximately 1,150 people and currently has seven production and recycling facilities throughout the U.S. and Canada. Visit www.horsehead.net for more information.