{"id":31794,"date":"2026-02-27T15:10:03","date_gmt":"2026-02-27T06:10:03","guid":{"rendered":"https:\/\/japanir.jp\/en\/ir\/1515-20260227-01_wp_business_update\/"},"modified":"2026-02-27T15:10:03","modified_gmt":"2026-02-27T06:10:03","slug":"1515-20260227-01_wp_business_update","status":"publish","type":"ir_release","link":"https:\/\/japanir.jp\/en\/company\/company-1515\/ir\/1515-20260227-01_wp_business_update\/","title":{"rendered":"(Disclosure Update) Partial Revision of the Alqueros Mine Development Project in the Republic of Chile"},"content":{"rendered":"<p>The projected development cost for the Alqueros Mine Development Project has increased to USD 486 million. Operating cost forecasts have changed to C1: 131\u00a2\/lb and C3: 318\u00a2\/lb, and production start has been delayed to July-September 2026.<\/p>\n","protected":false},"comment_status":"open","ping_status":"closed","template":"","meta":{"Ticker":"","DATE":"","longName":"","company_name_ja":"","fullTimeEmployees":0,"address":"","phone":"","website":"","industry":"","sector":"","regularMarketPrice":0,"financialCurrency":"","marketCap":0,"fiftyTwoWeekLow":0,"fiftyTwoWeekHigh":0,"epsTrailingTwelveMonths":0,"epsForward":0,"bookValue":0,"totalRevenue":0,"OperatingIncome":0,"operatingMargins":0,"NetIncome":0,"profitMargins":0,"ebitda":0,"trailingPE":0,"forwardPE":0,"priceToBook":0,"returnOnEquity":0,"recommendationMean":0,"recommendationKey":"","targetMeanPrice":0,"numberOfAnalystOpinions":0,"analyst_earnings_data":"","dividendRate":0,"dividendYield":0,"payoutRatio":0,"totalEsg":0,"environmentScore":0,"socialScore":0,"governanceScore":0,"title":"","providerPublishTime":"","link":"","longBusinessSummary":"","longBusinessSummary_ja":"","quarterly_revenue":0,"quarterly_net_income":0,"quarterly_operating_profit":0,"enterprise_value":0,"company_officer_1_name":"","company_officer_1_title":"","company_officer_2_name":"","company_officer_2_title":"","company_officer_3_name":"","company_officer_3_title":"","company_officer_4_name":"","company_officer_4_title":"","company_officer_5_name":"","company_officer_5_title":"","company_officers_update_time":"","get_dividend_history_year1":0,"get_dividend_history_year2":0,"get_dividend_history_year3":0,"get_dividend_history_year4":0,"get_dividend_history_year5":0,"get_dividend_history_year6":0,"get_dividend_history_year7":0,"get_dividend_history_year8":0,"get_dividend_history_year9":0,"get_dividend_history_year10":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"jir_stock_code":"1515","jir_company_name":"Nippon Steel Mining Co., Ltd.","jir_importance":"\u2605\u2605\u2605\u2606\u2606","jir_publication_date":"2026-02-27","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/02\/1515-20260227-01.pdf","jir_short_summary":"The projected development cost for the Alqueros Mine Development Project has increased to USD 486 million. Operating cost forecasts have changed to C1: 131\u00a2\/lb and C3: 318\u00a2\/lb, and production start has been delayed to July-September 2026.","jir_summary":"### Project Overview and Changes\nNippon Steel Mining Co., Ltd. is advancing the Alqueros Mine Development Project in Coquimbo Region, Republic of Chile. Due to engineering revisions, changes in construction methods, price increases, and permitting delays, the investment amount has increased compared to the initial plan, with projected development costs now at USD 486 million (previously USD 396 million). Additionally, the production start has been postponed from April 2026 to July-September 2026. While the operating cost forecast C1 has decreased to 131\u00a2\/lb, the C3 cost has increased to 318\u00a2\/lb. The assumed prices for copper and silver have also been revised upwards.\n\n### Impact on Earnings and Future Policy\nThe impact on consolidated earnings for the fiscal year ending March 2026 is expected to be minor. Any impact from the fiscal year ending March 2027 onwards will be promptly disclosed if disclosure is required. In its core mining business, the company aims for sustainable growth and positions ensuring financial soundness and improving capital efficiency in preparation for the long business cycle and large-scale development investments as management priorities. Accordingly, decisions regarding share buybacks and cancellations have also been announced.","jir_financial_highlights":"Projected Development Cost: USD 486 million (Increased from previously estimated USD 396 million)\nOperating Cost Forecast C1: 131\u00a2\/lb (Decreased from previously estimated 142\u00a2\/lb)\nOperating Cost Forecast C3: 318\u00a2\/lb (Increased from previously estimated 286\u00a2\/lb)\nAssumed Copper Price: 480\u00a2\/lb (Increased from previously estimated 385\u00a2\/lb)\nAssumed Silver Price: USD 50\/toz (Increased from previously estimated USD 23.5\/toz)\nProjected Production Start: July-September 2026 (Delayed from previously estimated April 2026)","jir_category":"","jir_hashtags":"#NipponSteelMining, #AlquerosMine, #BusinessStrategy, #JapaneseStocks","jir_key_figures":"Projected Development Cost: USD 486 million (previously USD 396 million)\nOperating Cost Forecast C1: 131\u00a2\/lb (previously 142\u00a2\/lb)\nProjected Production Start: July-September 2026 (previously April 2026)","jir_meta_title":"Nippon Steel Mining Increases Alqueros Mine Development Cost to USD 486 Million, Production Start Delayed to July-September 2026","jir_meta_description":"Nippon Steel Mining has raised the projected development costs for the Alqueros Mine Development Project in the Republic of Chile to USD 486 million and postponed production start to July-September 2026. Operating costs and assumed copper prices have also been revised.","jir_og_title":"Nippon Steel Mining Announces Partial Revision of Alqueros Mine Development Plan","jir_og_description":"Announces increased development costs and delayed production start. Impact on fiscal year March 2026 earnings expected to be minor.","jir_og_image_url":"\/assets\/og\/company-business_update.jpg","jir_chart_data_collection":"[]","ir_related_company":9164,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"business_update","footnotes":""},"sector":[],"importance":[],"class_list":["post-31794","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>(Disclosure Update) Partial Revision of the Alqueros Mine Development Project in the Republic of Chile - Japan IR<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/japanir.jp\/en\/company\/company-1515\/ir\/1515-20260227-01_wp_business_update\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/japanir.jp\/en\/company\/company-1515\/ir\/1515-20260227-01_wp_business_update\/\",\"url\":\"https:\/\/japanir.jp\/en\/company\/company-1515\/ir\/1515-20260227-01_wp_business_update\/\",\"name\":\"(Disclosure Update) Partial Revision of the Alqueros Mine Development Project in the Republic of Chile - 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