Horsehead Holding Corp. to Release Fourth Quarter Earnings

Horsehead Holding Corp. (NASDAQ: ZINC), the parent company of Horsehead Corporation and The International Metals Reclamation Company, plans to release its 2010 fourth quarter and annual results before the market opens on Friday, February 25, 2011.

A conference call will be held on Friday, February 25, 2011 at 11:00 am EST to discuss the results. The call will be hosted by James Hensler, President & CEO, Robert Scherich, Vice President & CFO, and Ali Alavi, Vice President – Corporate Administration, General Counsel & Secretary. Dial-in instructions are as follows:

An Audio-Only Web Conference Cast will also be available from the Investor Relations Corporate Information page of our website www.horsehead.net or directly at http://205.144.147.162/cgi-bin/confCast . Enter Conference ID# 190744 then click Go.

A replay of the call will be available beginning at 1:00 pm EST on Friday, February 25, 2011 and ending on Friday, March 4, 2011 at 11:59 pm EST. Dial-in instructions for the replay are:

Horsehead Holding Corp. ("Horsehead”) (Nasdaq: ZINC), 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, and 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. Horsehead, headquartered in Pittsburgh, Pa., employs approximately 1,000 people and has seven facilities throughout the U.S. Visit www.horsehead.net for more information.