$Horsehead Holding(ZINC)$ 8-K - Current report Filed: 2016-02-02 AccNo: 0001193125-16-446753 Size: 3 MBItem 1.03: Bankruptcy or ReceivershipItem 2.04: Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementItem 7.01: Regulatio 网页链接