X0101 EFFECT 33 LIVE 2016-09-26 0001193125-16-713584 POS AM 0001385544 Horsehead Holding Corp 333-191441 0001468501 Horsehead Corp 333-191441-05 0001468513 Chestnut Ridge Railroad Corp. 333-191441-04 0001578784 HORSEHEAD METAL PRODUCTS, LLC 333-191441-03 0001578785 INTERNATIONAL METALS RECLAMATION COMPANY, LLC 333-191441-02