日鉄鉱業（1515） – Consolidated Financial Results for the Fiscal Year Ended March 31, 2022(Under Japanese GAAP)

Note: This document has been translated from a part of the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail. May 10, 2022 Consolidated Financial Results for the Fiscal Year Ended March 31, 2022 (Under Japanese GAAP) Company name: Nittetsu Mining Co., Ltd. Tokyo Stock Exchange Listing: 1515 Securities code: https://www.nittetsukou.co.jp/ URL: Reiichi Morikawa, Representative Director and President Representative: Shimpei Kitajima, Manager, Account Section, General Accounting Department Inquiries: +81-3-3216-5255 Telephone: Scheduled date of annual general meeting of shareholders: Scheduled date to commence dividend payments: Scheduled date to file annual securities report: Preparation of supplementary material on financial results: Holding of financial results briefing: June 29, 2022 June 30, 2022 June 29, 2022 Yes None (Yen amounts are rounded down to millions, unless otherwise noted.) 1. Consolidated financial results for the fiscal year ended March 31, 2022 (from April 1, 2021 to March 31, 2022) (1) Consolidated operating results (Percentages indicate year-on-year changes.) Net sales Operating profit Ordinary profit Profit attributable to owners of parent Fiscal year ended March 31, 2022 March 31, 2021 Millions of yen % Millions of yen % Millions of yen % Millions of yen % 149,082 119,159 25.1 1.4 15,715 8,726 80.1 15.2 16,605 9,629 72.4 20.2 9,279 147.7 3,746 (17.1) Note: Comprehensive income For the fiscal year ended March 31, 2022: For the fiscal year ended March 31, 2021: ¥12,921 million ¥12,532 million [3.1%] [– %] Earnings per share Diluted earnings per share Return on equity Operating margin Ratio of ordinary profit to total assets Fiscal year ended March 31, 2022 March 31, 2021 Yen 1,115.46 450.37 Yen – – % 8.0 3.5 % 8.6 5.3 % 10.5 7.3 Reference: Share of profit (loss) of entities accounted for using equity method For the fiscal year ended March 31, 2022: For the fiscal year ended March 31, 2021: ¥123 million ¥598 million (2) Consolidated financial position As of March 31, 2022 March 31, 2021 Reference: Equity Total assets Net assets Capital adequacy ratio Net assets per share Millions of yen Millions of yen 197,732 188,735 126,371 116,411 % 60.7 58.9 Yen 14,434.52 13,352.30 As of March 31, 2022: As of March 31, 2021: ¥120,073 million ¥111,075 million 1(3) Consolidated cash flows Cash flows from operating activities Cash flows from investing activities Cash flows from financing activities Millions of yen Millions of yen Millions of yen Millions of yen 8,539 9,414 7,256) 6,539) ((4,759) 999) ((Cash and cash equivalents at end of period 32,949 35,236 Annual dividends per share First quarter-end Second quarter-end Third quarter-end Fiscal year-end Total Total cash dividends (Total) Payout ratio (Consolidated) Ratio of dividends to net assets (Consolidated) Yen Yen Yen Yen Yen Millions of yen % – – – 45.00 135.00 108.00 – – – 55.00 100.00 831 200.00 335.00 2,786 109.00 217.00 22.2 30.0 30.1 % 0.8 2.4 3. Consolidated financial results forecast for the fiscal year ending March 31, 2023 (from April 1, 2022 to Net sales Operating profit Ordinary profit Million yen 150,000 % 0.6 Million yen 11,000 % Million yen 11,500 (30.0) % (30.7) (Percentages indicate year-on-year changes.) Profit attributable to owners of parent Million yen 6,000 % (35.3) Earnings per share Yen 721.28 Fiscal year ended March 31, 2022 March 31, 2021 2. Cash dividends Fiscal year ended March 31, 2021 Fiscal year ended March 31, 2022 Fiscal year ending March 31, 2023 (Forecast) March 31, 2023) Full year 2* Notes (1) Changes in significant subsidiaries during the period (changes in specified subsidiaries resulting in the change in scope of consolidation): None (2) Changes in accounting policies, changes in accounting estimates, and restatement (i) Changes in accounting policies due to revisions to accounting standards and other regulations: Yes (ii) Changes in accounting policies due to other reasons: None (iii) Changes in accounting estimates: None (iv) Restatement: None (Note) For details, please refer to “3. Consolidated Financial Statements and Principal Notes, (5) Notes to Consolidated Financial Statements (Changes in Accounting Policies)” on page 13 of the attachment (Japanese only). (3) Number of issued shares (common shares) (i) Total number of issued shares at the end of the period (including treasury shares) (ii) Number of treasury shares at the end of the period (iii) Average number of shares outstanding during the period As of March 31, 2022 As of March 31, 2021 As of March 31, 2022 As of March 31, 2021 Year ended March 31, 2022 Year ended March 31, 2021 8,352,319 shares 8,352,319 shares 33,794 shares 33,495 shares 8,318,687 shares 8,319,271 shares [Reference] Overview of non-consolidated financial results 1. Non-consolidated financial results for the fiscal year ended March 31, 2022 (from April 1, 2021 to March 31, 2022) (1) Non-consolidated operating results (Percentages indicate year-on-year changes.) Net sales Operating profit Ordinary profit Profit Fiscal year ended March 31, 2022 March 31, 2021 Millions of yen % Millions of yen % Millions of yen % Millions of yen % 119,908 94,434 27.0 0.9 8,262 4,493 83.9 6.8 11,446 104.1 5,608 30.2 8,680 324.6 2,044 35.3) Earnings per share Diluted earnings per share Fiscal year ended March 31, 2022 March 31, 2021 Yen 1,043.48 245.76 Yen – – (2) Non-consolidated financial position As of March 31, 2022 March 31, 2021 Reference: Equity Millions of yen Millions of yen 165,301 160,171 106,442 99,126 As of March 31, 2022: As of March 31, 2021: ¥106,442 million ¥99,126 million ( Yen 12,795.87 11,915.90 % 64.4 61.9 Total assets Net assets Capital adequacy ratio Net assets per share 3* Financial results reports are exempt from audit conducted by certified public accountants or an audit corporation. * Proper use of earnings forecasts, and other special matters (Notes on forward-looking statements, etc.) Financial results forecasts and other forward-looking statements in this document are based on information currently available to the Company and certain assumptions deemed reasonable, and the Company does not guarantee their achievement. Actual performance and other results may be significantly different from the forecasts due to various factors. For details on the assumptions for financial results forecasts and notes on the use of financial results forecasts, etc., refer to “1. Overview of Operating Results, (4) Future Outlook” on page 4 of the attachment (Japanese only). 43. Consolidated Financial Statements and Principal Notes (1) Consolidated Balance Sheets As of March 31, 2021 As of March 31, 2022 (Millions of yen) Assets Current assets Cash and deposits Notes and accounts receivable – trade Notes and accounts receivable – trade, and contract assets Lease investment assets Merchandise and finished goods Work in process Raw materials and supplies Other Allowance for doubtful accounts Total current assets Non-current assets Property, plant and equipment Buildings and structures Accumulated depreciation Buildings and structures, net Machinery, equipment and vehicles Accumulated depreciation Machinery, equipment and vehicles, net Land used for mining operations Accumulated depreciation Land used for mining operations, net Land for general use Construction in progress Other Accumulated depreciation Other, net Total property, plant and equipment Intangible assets Mining right Other Total intangible assets Investments and other assets Investment securities Deferred tax assets Other Allowance for doubtful accounts Allowance for investment loss Total investments and other assets Total non-current assets Total assets 35,510 27,604 － 2,809 5,158 11,787 2,325 3,119 (448) 87,866 92,699 (71,052) 21,647 96,446 (86,168) 10,277 10,186 (6,418) 3,768 16,283 10,159 4,453 (4,005) 447 62,584 2,834 495 3,329 28,157 1,202 5,748 (149) (3) 34,955 100,869 188,735 33,224 － 30,757 2,551 5,825 8,369 6,432 2,992 (448) 89,705 94,103 (73,192) 20,911 99,224 (88,525) 10,699 10,275 (6,572) 3,702 16,299 15,053 4,619 (4,169) 450 67,117 3,111 497 3,608 29,172 1,256 7,031 (151) (8) 37,301 108,027 197,732 5 As of March 31, 2021 As of March 31, 2022 (Millions of yen) Liabilities Current liabilities Notes and accounts payable – trade Short-term loans payable Lease obligations Accounts payable – other Income taxes payable Provision for bonuses Provision for directors’ bonuses Provision for shareholder benefit program Provision for product warranties Provision for loss on fire Other Total current liabilities Non-current liabilities Long-term loans payable Lease obligations Deferred tax liabilities Provision for directors’ retirement benefits Provision for environmental safety measures Provision for special repairs Net defined benefit liability Asset retirement obligations Other Total non-current liabilities Total liabilities Net assets Shareholders’ equity Capital stock Capital surplus Retained earnings Treasury shares Total shareholders’ equity Accumulated other comprehensive income Valuation difference on available-for-sale securities Deferred gains or losses on hedges Foreign currency translation adjustment Remeasurements of defined benefit plans Total accumulated other comprehensive income Non-controlling interests Total net assets Total liabilities and net assets 17,588 16,491 593 7,551 1,023 1,074 31 9 7 548 3,242 48,162 5,086 980 2,019 78 37 111 4,476 4,509 6,861 24,161 72,323 4,176 4,889 91,693 (167) 100,591 10,986 79 53 (635) 10,483 5,336 116,411 188,735 14,627 15,922 869 7,061 2,939 1,103 34 10 10 － 4,358 46,938 4,817 1,348 2,753 77 5 226 3,799 4,639 6,754 24,422 71,360 4,176 4,746 99,391 (169) 108,145 11,974 (778) 808 (75) 11,928 6,297 126,371 197,732 6(2) Consolidated Statements of Income and Comprehensive Income Consolidated Statements of Income For the year ended March 31, 2021 (Millions of yen) For the year ended March 31, 2022 Net sales Cost of sales Gross profit Selling, general and administrative expenses Operating profit Non-operating income Interest income Dividend income Share of profit of entities accounted for using equity method Foreign exchange gains Other Total non-operating income Non-operating expenses Interest expenses Foreign exchange losses Maintenance fees for closed and abandoned mines Depreciation of assets for rent and other Other Total non-operating expenses Ordinary profit Extraordinary income Gain on sales of non-current assets Gain on sale of investment securities Other Total extraordinary income Extraordinary losses Loss on sales and retirement of non-current assets Impairment loss Loss on fire Other Total extraordinary losses Profit before income taxes Income taxes – current Income taxes – deferred Total income taxes Profit Profit (loss) attributable to non-controlling interests Profit attributable to owners of parent 119,159 92,104 27,054 18,327 8,726 39 591 598 － 475 1,704 272 66 228 136 98 801 9,629 42 0 0 44 320 912 1,754 82 3,070 6,603 2,694 (675) 2,019 4,584 837 3,746 149,082 114,217 34,864 19,149 15,715 23 1,062 123 127 224 1,561 261 － 215 92 102 671 16,605 46 145 － 191 220 106 148 16 493 16,304 5,082 27 5,110 11,193 1,914 9,279 7Consolidated Statements of Comprehensive Income Profit Other comprehensive income Valuation difference on available-for-sale securities Deferred gains or losses on hedges Foreign currency translation adjustment Remeasurements of defined benefit plans Total other comprehensive income (loss) Comprehensive income (loss) Comprehensive income (loss) attributable to Comprehensive income (loss) attributable to owners of parent Comprehensive income (loss) attributable to non-controlling interests For the year ended March 31, 2021 For the year ended March 31, 2022 (Millions of yen) 4,584 6,657 194 489) 1,587 (7,948 12,532 11,819 713 11,193 987 858) 1,034 (564 1,727 12,921 10,723 2,197 8(3) Consolidated Statements of Changes in Equity Year ended March 31, 2021 (from April 1, 2020 to March 31, 2021) Shareholders’ equity Capital stock Capital surplus Retained earnings Treasury shares (Millions of yen) Total shareholders’ equity 4,176 4,941 88,695 (163) 97,649 － 4,176 (52) 4,889 2,998 91,693 Accumulated other comprehensive income Valuation difference on available-for-sale securities 4,330 Deferred gains or losses on hedges Foreign currency translation adjustment Remeasurements of defined benefit plans Total accumulated other comprehensive income Non-controlling interests Total net assets 418 (2,223) 2,411 5,147105,208 (52) (748) 3,746 (3) (3) (167) (365)(365)53 1,587 1,587 (635) 8,072 8,072 10,483 1881885,336 (52) (748) 3,746 (3) 2,942 100,591 (52)(748)3,746 (3)8,261 11,203 116,411 Balance at beginning of period Changes during period Change in ownership interest of parent due to transactions with non-controlling interests Dividends of surplus Profit attributable to owners of parent Purchase of treasury shares Net changes in items other than shareholders’ equity Total changes during period Balance at end of current period Balance at beginning of period Changes during period Change in ownership interest of parent due to transactions with non-controlling interests Dividends of surplus Profit attributable to owners of parent Purchase of treasury shares Net changes in items other than shareholders’ equity Total changes during period Balance at end of current period 6,655 6,655 10,986 (114) 194 194 79 9Year ended March 31, 2022 (from April 1, 2021 to March 31, 2022) Shareholders’ equity Capital stock Capital surplus Retained earnings Treasury shares 4,176 4,889 91,693 (167) 100,591 (Millions of yen) Total shareholders’ equity Balance at beginning of period Changes during period Change in ownership interest of parent due to transactions with non-controlling interests Dividends of surplus Profit attributable to owners of parent Purchase of treasury shares Net changes in items other than shareholders’ equity Total changes during period Balance at end of current period (143) (1,580) 9,279 — 4,176 (143) 4,746 7,698 99,391 Accumulated other comprehensive income (1) (1) (169) Valuation difference on available-for-sale securities Deferred gains or losses on hedges Foreign currency translation adjustment Remeasurements of defined benefit plans Total accumulated other comprehensive income Non-controlling interests Total net assets Balance at beginning of period 10,986 79 53 (635) 10,483 5,336116,411 Changes during period Change in ownership interest of parent due to transactions with non-controlling interests Dividends of surplus Profit attributable to owners of parent Purchase of treasury shares Net changes in items other than shareholders’ equity Total changes during period Balance at end of current period 755 755 808 987 987 11,974 (858)(858)(778)560 560 (75) 1,444 1,444 11,928 9619616,297(143) (1,580) 9,279 (1) 7,553 108,145 (143)(1,580)9,279 (1)2,406 9,960 126,371 10(4) Consolidated Statements of Cash Flows For the year ended March 31, 2021 For the year ended March 31, 2022 (Millions of yen) Cash flows from operating activities Profit before income taxes Depreciation Impairment losses Increase (decrease) in allowance for doubtful accounts Increase (decrease) in provision for bonuses Increase (decrease) in other provisions Increase (decrease) in retirement benefit liability Interest and dividend income Interest expenses Foreign exchange losses (gains) Share of loss (profit) of entities accounted for using equity method Gain on sale of non-current assets Loss on sale and retirement of non-current assets Loss on fire Decrease (increase) in trade receivables Decrease (increase) in inventories Decrease (increase) in advance payments to suppliers Decrease (increase) in accounts receivable – other Increase (decrease) in trade payables Increase (decrease) in advances received Increase (decrease) in accounts payable – other Increase (decrease) in accrued consumption taxes Other, net Subtotal Interest and dividends received Interest paid Loss on fire paid Income taxes paid Income taxes refund Net cash provided by (used in) operating activities Cash flows from investing activities Payments into time deposits Proceeds from withdrawal of time deposits Purchase of property, plant and equipment Proceeds from sale of property, plant and equipment Purchase of intangible assets Purchase of investment securities Proceeds from sale of investment securities Decrease (increase) in short-term loans receivable Other, net Net cash provided by (used in) investing activities 6,603 5,302 912 42 (12) (180) 607 (630) 272 (76) (598) (42) 320 1,754 (1,264) (516) 36 (850) (189) 147 820 365 (695) 12,127 632 (226) (315) (2,824) 21 9,414 (2) 352 (6,775) 89 (110) (50) 3 (38) (8) (6,539) 16,304 5,426 106 (45) 29 93 124 (1,085) 261 (652) (123) (46) 220 148 (2,746) (1,276) 21 593 (2,938) － (157) 694 (2,371) 12,579 1,044 (271) (1,471) (3,353) 12 8,539 (0) － (7,987) 55 (20) (28) 688 16 19 (7,256) 11 For the year ended March 31, 2021 For the year ended March 31, 2022 (Millions of yen) Cash flows from financing activities Net increase (decrease) in short-term borrowings Proceeds from long-term borrowings Repayments of long-term borrowings Purchase of treasury shares Repayments of lease liabilities Dividends paid Dividends paid to non-controlling interests Net cash provided by (used in) financing activities Effect of exchange rate change on cash and cash equivalents Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period (40) 1,982 (948) (3) (662) (748) (577) (999) (124) 1,751 33,484 35,236 (290) 334 (1,052) (1) (794) (1,576) (1,378) (4,759) 1,190 (2,286) 35,236 32,949 12