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<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/income-tax-expense-benefit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/income-taxes-paid</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-accounts-and-other-receivables</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-accounts-payable</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-accrued-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-deposit-other-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-inventories</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-other-noncurrent-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-other-noncurrent-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-other-operating-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-prepaid-deferred-expense-and-other-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/increase-decrease-in-restricted-cash</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/incremental-common-shares-attributable-to-conversion-of-debt-securities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/incremental-common-shares-attributable-to-share-based-payment-arrangements</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/indefinite-lived-intangible-assets-excluding-goodwill</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/insider-transactions-other</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/insider-transactions-stock-options</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/insurance-recoveries</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/intangible-assets-net-excluding-goodwill</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/interest-and-debt-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/interest-costs-capitalized</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/interest-expense-on-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/interest-paid-capitalized</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/interest-paid-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-finished-goods</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-gross</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-raw-materials</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-supplies-net-of-reserves</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-valuation-reserves</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-work-in-process</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/inventory-write-down</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/investing-cash-flow</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/investment-tax-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/investments-in-affiliates-subsidiaries-associates-and-joint-ventures</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/land-and-land-improvements</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/lease-and-rental-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/letters-of-credit-outstanding-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/liabilities-subject-to-compromise</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/liabilities-subject-to-compromise-accounts-payable-and-accrued-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/liabilities-subject-to-compromise-debt-and-accrued-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/liabilities-subject-to-compromise-other-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/line-of-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/line-of-credit-facility-amount-outstanding</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/line-of-credit-facility-maximum-borrowing-capacity</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/line-of-credit-facility-unused-capacity-commitment-fee-percentage</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/loans-payable</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/long-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/long-term-purchase-commitment-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/long-term-purchase-commitment-minimum-mass-required</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/machinery-and-equipment-gross</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/minority-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/minority-interest-decrease-from-distributions-to-noncontrolling-interest-holders</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/minority-interest-increase-from-stock-issuance</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/net-change-in-cash</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/noncontrolling-interest-increase-from-subsidiary-equity-issuance</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/notes-and-loans-payable-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/number-of-operating-segments</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/number-of-reportable-segments</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/oci-defined-benefit-plans-adjustment-net-of-tax-change</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/oci-foreign-currency-transaction-and-translation-gain-loss-arising-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/oci-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/oci-net-of-tax-change</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/oci-pension-and-other-postretirement-benefit-plans-adjustment-net-of-tax</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-cash-flow</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-income</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-in-five-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-in-four-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-in-three-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-in-two-years</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-lease-payments-due-thereafter</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/operating-loss-carryforwards</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-accrued-liabilities-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-income</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-noncurrent-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-noncurrent-liabilities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-nonoperating-income-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-prepaid-expense-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/other-receivables-net-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-convertible-debt-with-conversion-feature</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-equity-component-of-convertible-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-equity-component-of-convertible-debt-subsequent-adjustments</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-share-based-compensation-restricted-stock-units-requisite-service-period-recognition</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-shares-issued-issuance-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/paid-in-capital-stock-compensation</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-for-proceeds-from-previous-acquisition</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-for-restructuring</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-of-debt-issuance-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-of-financing-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-of-stock-issuance-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-to-acquire-intangible-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/payments-to-minority-shareholders</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-shares-facts</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-stock-par-or-stated-value-per-share</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-stock-shares-authorized</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-stock-shares-issued</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-stock-shares-outstanding</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/preferred-stock-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/prepaid-expense-and-other-assets-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/prepaid-expense-and-other-assets-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/prepaid-expense-other-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/prepaid-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/pretax-income-domestic</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/pretax-income-minority-interest-and-income-loss-from-equity-method-investments</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-convertible-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-debt-net-of-issuance-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-insurance-settlement-investing-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-issuance-initial-public-offering</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-issuance-of-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-issuance-of-medium-term-notes</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-issuance-of-senior-long-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-issuance-or-sale-of-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-lines-of-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-long-term-lines-of-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-minority-shareholders</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-payments-for-other-financing-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-payments-to-minority-shareholders</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-sale-of-land-held-for-use</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-stock-issued</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/proceeds-from-stock-options-exercised</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/profit-loss</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/property-plant-and-equipment-additions</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/property-plant-and-equipment-disposals</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/property-plant-and-equipment-gross</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/property-plant-equipment</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/provision-for-doubtful-accounts</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/public-float</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/real-estate-investments-unconsolidated-real-estate-and-other-joint-ventures</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/recycling-revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/reorganization-items</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/repayments-of-long-term-lines-of-credit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restricted-cash-and-cash-equivalents-noncurrent</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-and-related-cost-expected-cost-remaining</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-and-related-cost-expected-cost-remaining-1</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-and-related-cost-expected-number-of-positions-eliminated</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-and-related-cost-number-of-positions-eliminated</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-charges</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-costs</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-reserve</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/restructuring-reserve-accrual-adjustment</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/retained-earnings</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/revenue</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/sales-and-excise-tax-payable-current</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/sales-revenue-goods-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/sales-revenue-services-net</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/secured-long-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/senior-notes</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/sga-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/shareholders-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/shares-authorized</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/shares-issued</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/shares-issued-shares-new-issues</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-award-fair-value-assumptions-expected-volatility-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-award-fair-value-assumptions-risk-free-interest-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-award-rsu-grants-in-period</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-award-rsu-nonvested-grant-date-fair-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-based-compensation</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-compensation-unrecognized-cost</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-issued-new-shares-sold</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-issued-shares-issued-value-restricted-stock-award-net-of-forfeitures</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-issued-shares-issued-value-stock-options-exercised</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-options-grants-in-period-grant-date-fair-value</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-options-outstanding-average-exercise-price</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-options-outstanding-number</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stock-options-vested-and-expected-to-vest-exercisable-number</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/stockholders-equity-including-portion-attributable-to-noncontrolling-interest</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/supplementary-insurance-information-benefits-claims-losses-and-settlement-expense</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tangible-asset-impairment-charges</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-credit-carryforward-amount</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-credit-carryforward-valuation-allowance</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-rate-reconciliation-at-federal-statutory-income-tax-rate</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-deductions-qualified-production-activities</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-foreign-income-tax-rate-differential</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-nondeductible-expense-research-and-development</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-other-adjustments</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-state-and-local-income-taxes</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-reconciliation-tax-credits-research</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/tax-withholding-on-stock-awards</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/total-assets</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/total-liabilities-and-equity</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/total-long-term-debt</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/unrealized-gain-loss-on-derivatives</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/unusual-or-infrequent-item-insurance-proceeds</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/utb-income-tax-penalties-and-interest-accrued</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/weighted-average-number-of-share-outstanding-basic-and-diluted</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/weighted-average-rate-domestic-deposit</loc></url>
<url><loc>https://stock.noler.com/us/stock/horsehead-holding-corp/workers-compensation-liability-current</loc></url>
</urlset>
