July 14, 2015 (Shareholders Foundation) - An investigation on behalf of investors of Horsehead Holding Corp. (NASDAQ:ZINC) shares over potential securities laws violations by Horsehead Holding and certain of its directors and officers in connection certain financial statements was announced.

The investigation by a law firm focuses on possible claims on behalf of purchasers of the securities of Horsehead Holding Corp. (NASDAQ:ZINC) concerning whether a series of statements by Horsehead Holding regarding its business, its prospects and its operations were materially false and misleading at the time they were made.

On July 2, 2015, HORSEHEAD HOLDING CORP. issued an update on operations at its Mooresboro, North Carolina zinc production facility. HORSEHEAD HOLDING CORP. said that the facility produced approximately 3,700 tons of zinc metal in June of 2015, compared to 4,100 tons and 2,800 tons in May and April of 2015, respectively and that June's production was slowed initially while implementing certain improvements but accelerated through the latter half of the month with 2,600 of the 3,700 tons being produced since the 15th of June.

Shares of HORSEHEAD HOLDING CORP. (NASDAQ:ZINC) declined on July 6, 2015, to as low as $8.33 per share.