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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash Flows from Operating Activities |  |  |
Net (loss)/ income | $ (82,711) | $ 207,241 | $ 292,668
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Asset (gain)/impairment | (4,082) | 100,242 | 25,026
Depreciation, depletion and amortization | 239,086 | 255,359 | 239,140
Loss from the early extinguishment of debt | 20,184 | 0 | 0
Gain on adjustment of environmental reserves | 0 | 0 | (10,675)
Share-based compensation expense | 22,608 | 10,607 | 14,334
Equity in earnings of affiliates, net of tax | (10,841) | (4,679) | (5,171)
Cash dividends from affiliated companies | 8,660 | 6,777 | 6,620
Net loss/(gain) on disposition of assets | 15 | (2,752) | 746
Net loss on divestiture of business | 2,667 | 14,516 | 0
Pension and postretirement plan expense | 595,620 | 57,973 | 52,741
Pension and postretirement plan contributions | (163,659) | (40,411) | (231,234)
Net (decrease)/increase in deferred taxes | (158,836) | 573 | 16,958
Change in assets and liabilities, net of effects from acquisitions, divestitures and foreign currency adjustments |  |  |
Trade accounts receivable | (149,755) | 17,853 | 59,615
Inventories | (130,119) | 12,125 | 2,631
Payable to suppliers | 172,430 | 21,487 | (25,383)
Prepaid expenses | (13,077) | 4,754 | 4,030
Income taxes payable and other income tax items | (42,204) | (12,545) | (6,201)
Accrued expenses and other assets and liabilities | (7,314) | 56,501 | (9,995)
Net cash provided by operating activities | 298,672 | 705,621 | 425,850
Cash Flows from Investing Activities |  |  |
Purchase of property, plant and equipment | (256,019) | (194,127) | (195,934)
Cost of acquisitions, net of cash acquired | (22,209) | (49,261) | (298,380)
Proceeds from the sale of business, net | 91,569 | 103,411 | 0
Proceeds from the sale of assets | 13,166 | 12,966 | 14,614
Other net investing activities | 7,591 | 684 | 603
Net cash used by investing activities | (165,902) | (126,327) | (479,097)
Cash Flows from Financing Activities |  |  |
Proceeds from issuance of debt | 172,042 | 1,121,860 | 276,843
Principal repayment of debt | (628,119) | (886,055) | (139,582)
Net increase/(decrease) in commercial paper borrowings | 349,000 | (250,000) | 130,000
Net increase/(decrease) in outstanding checks | 6,974 | 20,950 | (4,486)
Proceeds from interest rate swap | 4,387 | 14,480 | 0
Payment of contingent consideration | 0 | (3,000) | (5,500)
Cash dividends – common | (178,622) | (172,626) | (170,253)
Dividends paid to noncontrolling interests | (1,009) | 0 | (214)
Excess cash costs of early extinguishment of debt | (20,111) | 0 | 0
Payments for share repurchases | (218,085) | (8,483) | (9,608)
Net cash (used)/provided by financing activities | (513,543) | (162,874) | 77,200
Effects of Exchange Rate Changes on Cash | (13,097) | 3,145 | 941
(Decrease)/Increase in Cash and Cash Equivalents | (393,870) | 419,565 | 24,894
Cash and cash equivalents at beginning of year | 564,848 | 145,283 | 120,389
Cash and cash equivalents at end of year | 170,978 | 564,848 | 145,283
Supplemental Schedule of Non-Cash Investing Activities: |  |  |
Non-cash additions to property, plant and equipment | 27,343 | 3,139 | 5,342
Interest paid, net of amounts capitalized | 68,189 | 71,707 | 66,768
Income taxes paid, net of refunds | $ 133,610 | $ 65,002 | $ 82,512

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