Exhibit 1.01
MDU Resources Group, Inc.
Conflict Minerals Report
For The Year Ended December 31, 2014
Introduction
This conflict minerals report (the “Report”) has been prepared pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”), for the reporting period from January 1 to December 31, 2014.
The Report relates to the process undertaken by MDU Resources Group, Inc. (herein referred to as “MDU Resources,” the “Company,” “we,” “us,” or “our”) with respect to products that were manufactured, or contracted to be manufactured, during calendar year 2014 and that contain cassiterite, columbite-tantalite, gold, wolframite, and their derivatives, which are limited to tin, tantalum, and tungsten for purposes of this Report (collectively, the “Conflict Minerals”).
Third-party products that we sell but do not manufacture or contract to manufacture are outside the scope of this Report.
Company and Products Overview
MDU Resources is a diversified natural resource company which operates in a number of business segments, including electric, natural gas distribution, pipeline and energy services, exploration and production, construction materials and contracting, and construction services.
The Company, through its wholly-owned subsidiary MDU Construction Services Group, Inc., (“MDU Construction Services”) provides utility construction services specializing in constructing and maintaining electric and communication lines, gas pipelines, fire suppression systems, and external lighting and traffic signalization. MDU Construction Services also provides utility excavation and inside electrical and mechanical services, and manufactures and distributes transmission line construction equipment and supplies. The construction equipment that is manufactured by MDU Construction Services, through its wholly-owned subsidiary Wagner-Smith Equipment Co., includes electric transmission line pullers, tensioners, reel stands, reel carriers, and electric transmission pole and material trailers (the “Construction Equipment”).
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Based upon our internal assessment, certain of the Construction Equipment products are the only products that are either manufactured or contracted to be manufactured by the Company and its subsidiaries which contain Conflict Minerals. Accordingly, for purposes of this Report, only the Construction Equipment products were considered.
Supply Chain Overview
We have performed a detailed analysis of our Construction Equipment product components and the role that suppliers play throughout our manufacturing and product delivery processes. We do not purchase ore or unrefined Conflict Minerals from mines and we are many steps removed in the supply chain from the mining of the Conflict Minerals. Instead, the Company purchases materials used in our Construction Equipment from a large network of suppliers and some of those materials contribute necessary Conflict Minerals to certain of our products. The origin of the Conflict Minerals cannot be determined with any certainty once the raw ores are smelted, refined and converted to ingots, bullion or other Conflict Mineral containing derivatives. The smelters and refiners are the consolidating points for raw ore and are in the best position in the total supply chain to know the origins of the ores. We rely upon our suppliers to assist with our reasonable country of origin inquiry (“RCOI”) and due diligence efforts, including the identification of smelters and refiners, for the Conflict Minerals contained in the materials which they supply to us.
Conflict Minerals Program
Our Conflict Minerals program has been developed in conformity with the Organisation for Economic Co-operation and Development Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas (Second Edition), and related Supplement on Tin, Tantalum and Tungsten and Supplement on Gold (collectively, the “OECD Guidance”), specifically as it relates to our position in the minerals supply chain as a “downstream” purchaser.
Our Conflict Minerals program includes components, summarized below, related to the five-step framework set forth in the OECD Guidance:
Management Systems
• MDU Resources established an internal “Conflict Minerals” team which is responsible for implementing and overseeing our Conflict Minerals compliance strategy. Our team includes individuals from relevant function areas including accounting, legal, finance and operations.
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• In May of 2014, we adopted a Conflict Minerals Policy, available on our website, pursuant to which we:
| 1. | Work closely with our suppliers to determine the potential use of conflict minerals in our supply chain and, when appropriate, work with them to remediate issues and source more responsibly. |
| 2. | Expect our conflict minerals suppliers to conduct the necessary inquiry and, where appropriate, additional due diligence to provide us with confirmation of the source of the materials used in their processes and ultimately present in our manufactured products; and |
| 3. | Encourage our suppliers to advocate and adhere to our philosophy of sourcing conflict minerals from socially responsible suppliers, including conflict-free mines in the Democratic Republic of the Congo or adjoining countries (collectively, the “Covered Countries”). |
• Our employees, vendors, customers and other stakeholders may report any concerns relating to our Conflict Minerals program by telephone or online through our EthicsPoint system.
Identify and Assess Risks in Our Supply Chain
We have determined that seeking information about Conflict Minerals smelters and refiners in our supply chain from our suppliers represents the most reasonable effort we can make to determine the mines or location of origins of the Conflicts Minerals in our Construction Products. We identify direct suppliers that supply products to us that may contain Conflict Minerals. We then survey those suppliers, requesting relevant information regarding the origins of Conflict Minerals used in the products they supply to us and the smelters and refiners used in connection with such Conflict Minerals. We follow up, by telephone and written correspondence, with those suppliers that do not respond by a specified date. We review the responses for completeness and request additional information as necessary. We then compare the smelters and refiners identified in the supply chain survey against the list of facilities that have been designated “conflict-free” by the Conflict-Free Sourcing Initiative (“CFSI”) under its Conflict Free Smelter Program (the “CFSP”) and against the CFSI list of active facilities that have committed to undergo a CFSP audit. We rely on the CFSI to carry out smelter assessments and audits.
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Design and Implement a Strategy to Respond to Risks
We intend to work with suppliers who are sourcing minerals from non-conflict-free smelters and refiners to move towards using conflict-free facilities within a reasonable time frame. The time frame will be dependent on the criticality of the specific part and the availability of alternative suppliers.
Risk management efforts are discussed by the Conflicts Mineral team and risk assessment updates are provided regularly to senior management.
Third-Party Audit of Smelter/Refiner’s Due Diligence Practices
We encourage our suppliers to advocate and adhere to our philosophy of sourcing Conflict Minerals from socially responsible suppliers, including conflict-free mines, and support industry efforts to encourage smelters and refiners to seek “conflict-free” designation by the CFSI.
Report on Supply Chain Due Diligence
MDU Resources makes its Conflicts Mineral Report available on its website at www.mdu.com/integrity/governance/conflictmineralsreport.
The content of our website referred to in this Report is included for general information only and is not incorporated by reference into this Report.
Reasonable Country of Origin Inquiry
We have conducted an RCOI regarding the Conflict Minerals purchased by the Company that was reasonably designed to determine whether any such Conflict Minerals originated in the Covered Countries, or were from recycled or scrap sources. We identified 120 suppliers that provided components or engaged in manufacturing activities for use in our Construction Equipment products that may contain Conflict Minerals during calendar year 2014. In early March 2015, we contacted these suppliers and provided them with the CFSI Conflict Minerals Reporting Template (the “Template”) and a power point instructional tool to assist them in completing their responses. The Template includes questions regarding a company’s conflict-free policy, engagement with its direct suppliers, and a listing of the smelters and refiners the company and its suppliers use. In addition, the Template contains questions about the origin of Conflict Minerals included in the supplier’s products, as well as the supplier’s due diligence processes. We requested responses by April 15,
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2015 and conducted follow-up by telephone and written correspondence in April and May with those vendors that did not respond to the initial request.
Of the suppliers surveyed, 63% (76 suppliers) responded to our request for information. Based upon the results of our RCOI, we cannot exclude the possibility that some of the Conflict Minerals used in our Construction Equipment products originated or may have originated in the Covered Countries and are not from recycled or scrap sources.
Design of Due Diligence
Our Conflict Minerals due diligence measures have been designed to conform to the OECD Guidance, as applicable for a “downstream” purchaser.
Due Diligence Measures Performed
Below is a description of the measures we performed to exercise due diligence on the source and chain of custody of the necessary Conflict Materials contained in our Construction Equipment.
| • | We sent our suppliers a letter which included the Template and instruction and requested that they complete and return the Template. |
| • | We requested that our suppliers communicate their Conflict Mineral policies and sourcing expectation to their suppliers and request that they complete the Template. |
| • | We followed up by telephone and written correspondence with our suppliers that failed to complete and return the Template and solicited additional information. |
| • | We reviewed all received supplier Templates for completeness. Suppliers that did not provide complete information or provided information that we identified as potentially inaccurate were requested to take corrective actions and update their Template responses. |
| • | We compared smelters identified in supplier Templates against the list of smelters that have committed to undergo a CFSP audit and the list of smelters that have received a “conflict free” designation under the CFSP. |
Due Diligence Results
For reporting year 2014, we surveyed 120 suppliers of materials for our Specialized Equipment using the Template. Of the suppliers surveyed, 63% (76 suppliers) responded to our request for
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information. We have relied on these suppliers' responses to provide us with information about the source of Conflict Minerals contained in the components supplied to us. Our direct suppliers are similarly reliant upon information provided by their suppliers.
As the result of our due diligence, we have gathered 383 smelter names from our supply chain. Of these, 156 have been designated as conflict-free compliant under the CFSP. An additional 35 are active facilities that have committed to undergo a CFSP audit. Of the remaining reported smelters, 83 have been determined to be legitimate processing facilities by the CFSI and have been allocated a Smelter Identification CID number. The final 109 are alleged smelters which have not yet been validated by CFSI.
We requested mine or location of origin information for the necessary Conflict Minerals from each of our suppliers using the Template. In some instances our suppliers reported name or location of mine. However, many of our suppliers were unable to obtain reliable mine or location of origin data for their necessary Conflict Minerals.
One smelter identified by a supplier, Malaysia Smelting Corporation, has a mine located in a Covered Country. Malaysia Smelting Corporation is included on the CFSP conflict-free smelter list.
Determination
We do not have sufficient information from our suppliers or other sources to determine the country of origin of all the Conflict Minerals used in our Construction Equipment products, the smelters and refiners used to process such Conflict Minerals, whether the Conflict Minerals used in the Construction Equipment are from recycled or scrap sources, their country of origin or their mine or location of origin.
Many of our suppliers were unable to represent to us that the Conflict Minerals from the entities they listed had actually been included in materials they supplied to us. In addition, many processing facilities were not validated as in fact being smelters or refiners. Therefore, based on the information provided by our suppliers, we have elected to present only the facility names recognized by the CFSI on Annex 1 and believe that these facilities may have been used to process the Conflict Minerals in our Construction Equipment.
Based on our due diligence efforts, we do not have sufficient information to conclusively determine the countries of origin of the Conflict Materials in our Construction Equipment or whether the Conflict Materials are from recycled or scrap sources. On the basis of the due diligence measures
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described in this Report, we have reason to believe that some of the Conflict Minerals used in our Construction Equipment products may have originated in the Covered Countries and are not from recycled or scrap sources, but we have not identified any instances in which our sourcing of necessary Conflict Minerals directly or indirectly financed or benefitted armed groups in the Covered Countries.
We have provided information as of the date of this Report. Subsequent events may affect our future determinations under the Rule.
Future Due Diligence Measures
As we continue to develop our due diligence program, we intend to take the following steps, among others, to continue to mitigate the risk that the necessary Conflict Minerals in our Construction Equipment could benefit armed groups in the Covered Countries:
• Enhance supplier communication to improve supply chain survey completion and due diligence data accuracy;
• Track and add new suppliers to our Conflict Minerals program as they enter our supply chain;
• Drive our suppliers to obtain current, accurate and complete information about their smelters and refiners of Conflict Minerals; and
• Continue to identify additional smelters and refiners and encourage them to obtain “conflict-free” designation.
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ANNEX 1
| Subject Mineral | Smelter or Refiner Name | Country location of Smelter or Refiner |
| Gold | Advanced Chemical Company | UNITED STATES |
| Gold | Aida Chemical Industries Co. Ltd. | JAPAN |
| Gold | Allgemeine Gold-und Silberscheideanstalt A.G. | GERMANY |
| Gold | Almalyk Mining and Metallurgical Complex (AMMC) | UZBEKISTAN |
| Gold | AngloGold Ashanti Córrego do Sítio Minerção | BRAZIL |
| Gold | Argor-Heraeus SA | SWITZERLAND |
| Gold | Asahi Pretec Corporation | JAPAN |
| Gold | Asaka Riken Co Ltd | JAPAN |
| Gold | Atasay Kuyumculuk Sanayi Ve Ticaret A.S. | TURKEY |
| Gold | Aurubis AG | GERMANY |
| Gold | Bangko Sentral ng Pilipinas (Central Bank of the Philippines) | PHILIPPINES |
| Gold | Bauer Walser AG | GERMANY |
| Gold | Boliden AB | SWEDEN |
| Gold | C. Hafner GmbH + Co. KG | GERMANY |
| Gold | Caridad | MEXICO |
| Gold | CCR Refinery – Glencore Canada Corporation | CANADA |
| Gold | Cendres & Métaux SA | SWITZERLAND |
| Gold | Chimet S.p.A. | ITALY |
| Gold | China National Gold Group Corporation | CHINA |
| Gold | Chugai Mining | JAPAN |
| Gold | Codelco | CHILE |
| Gold | Colt Refining | UNITED STATES |
| Gold | Conghua Tantalum and Niobium Smeltry | CHINA |
| Gold | Daejin Indus Co. Ltd | KOREA, REPUBLIC OF |
| Gold | DaeryongENC | KOREA, REPUBLIC OF |
| Gold | Daye Non-Ferrous Metals Mining Ltd. | CHINA |
| Gold | Do Sung Corporation | KOREA, REPUBLIC OF |
| Gold | Doduco GmbH | GERMANY |
| Gold | Dowa | JAPAN |
| Gold | Eco-System Recycling Co., Ltd. | JAPAN |
| Gold | FSE Novosibirsk Refinery | RUSSIAN FEDERATION |
| Gold | Gansu Seemine Material Hi-Tech Co Ltd | CHINA |
| Gold | Guangdong Jinding Gold Limited | CHINA |
| Gold | Hangzhou Fuchunjiang Smelting Co., Ltd. | CHINA |
| Gold | Heimerle + Meule GmbH | GERMANY |
| Gold | Heraeus Ltd. Hong Kong | HONG KONG |
| Gold | Heraeus Precious Metals GmbH & Co. KG | GERMANY |
| Gold | Hunan Chenzhou Mining Group Co., Ltd. | CHINA |
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| Gold | Hwasung CJ Co. Ltd | KOREA, REPUBLIC OF |
| Gold | Inner Mongolia Qiankun Gold and Silver Refinery Share Company Limited | CHINA |
| Gold | Ishifuku Metal Industry Co., Ltd. | JAPAN |
| Gold | Istanbul Gold Refinery | TURKEY |
| Gold | Japan Mint | JAPAN |
| Gold | Jiangxi Copper Company Limited | CHINA |
| Gold | Jiangxi Rare Earth & Rare Metals Tungsten Group Corp | CHINA |
| Gold | Johnson Matthey Inc | UNITED STATES |
| Gold | Johnson Matthey Limited | CANADA |
| Gold | JSC Ekaterinburg Non-Ferrous Metal Processing Plant | RUSSIAN FEDERATION |
| Gold | JSC Uralelectromed | RUSSIAN FEDERATION |
| Gold | JX Nippon Mining & Metals Co., Ltd. | JAPAN |
| Gold | Kazzinc Ltd | KAZAKHSTAN |
| Gold | Kennecott Utah Copper LLC | UNITED STATES |
| Gold | Kojima Chemicals Co. Ltd | JAPAN |
| Gold | Korea Metal Co. Ltd | KOREA, REPUBLIC OF |
| Gold | Kyrgyzaltyn JSC | KYRGYZSTAN |
| Gold | L' azurde Company For Jewelry | SAUDI ARABIA |
| Gold | Lingbao Gold Company Limited | CHINA |
| Gold | Lingbao Jinyuan Tonghui Refinery Co. Ltd. | CHINA |
| Gold | LS-NIKKO Copper Inc. | KOREA, REPUBLIC OF |
| Gold | Luoyang Zijin Yinhui Metal Smelt Co Ltd | CHINA |
| Gold | Materion | UNITED STATES |
| Gold | Matsuda Sangyo Co., Ltd. | JAPAN |
| Gold | Metalor Technologies (Hong Kong) Ltd | HONG KONG |
| Gold | Metalor Technologies (Singapore) Pte. Ltd. | SINGAPORE |
| Gold | Metalor Technologies SA | SWITZERLAND |
| Gold | Metalor USA Refining Corporation | UNITED STATES |
| Gold | Met-Mex Peñoles, S.A. | MEXICO |
| Gold | Mitsubishi Materials Corporation | JAPAN |
| Gold | Mitsui Mining and Smelting Co., Ltd. | JAPAN |
| Gold | Moscow Special Alloys Processing Plant | RUSSIAN FEDERATION |
| Gold | Nadir Metal Rafineri San. Ve Tic. A.Ş. | TURKEY |
| Gold | Navoi Mining and Metallurgical Combinat | UZBEKISTAN |
| Gold | Nihon Material Co. LTD | JAPAN |
| Gold | Ohio Precious Metals, LLC | UNITED STATES |
| Gold | Ohura Precious Metal Industry Co., Ltd | JAPAN |
| Gold | OJSC “The Gulidov Krasnoyarsk Non-Ferrous Metals Plant” (OJSC Krastvetmet) | RUSSIAN FEDERATION |
| Gold | OJSC Kolyma Refinery | RUSSIAN FEDERATION |
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| Gold | PAMP SA | SWITZERLAND |
| Gold | Penglai Penggang Gold Industry Co Ltd | CHINA |
| Gold | Prioksky Plant of Non-Ferrous Metals | RUSSIAN FEDERATION |
| Gold | PT Aneka Tambang (Persero) Tbk | INDONESIA |
| Gold | PX Précinox SA | SWITZERLAND |
| Gold | Rand Refinery (Pty) Ltd | SOUTH AFRICA |
| Gold | Royal Canadian Mint | CANADA |
| Gold | Sabin Metal Corp. | UNITED STATES |
| Gold | Samduck Precious Metals | KOREA, REPUBLIC OF |
| Gold | SAMWON METALS Corp. | KOREA, REPUBLIC OF |
| Gold | Schone Edelmetaal | NETHERLANDS |
| Gold | SEMPSA Joyería Platería SA | SPAIN |
| Gold | Shandong Zhaojin Gold & Silver Refinery Co. Ltd | CHINA |
| Gold | Sichuan Tianze Precious Metals Co., Ltd | CHINA |
| Gold | So Accurate Group, Inc. | UNITED STATES |
| Gold | SOE Shyolkovsky Factory of Secondary Precious Metals | RUSSIAN FEDERATION |
| Gold | Solar Applied Materials Technology Corp. | TAIWAN |
| Gold | Sumitomo Metal Mining Co., Ltd. | JAPAN |
| Gold | Suzhou Xingrui Noble | CHINA |
| Gold | Tanaka Kikinzoku Kogyo K.K. | JAPAN |
| Gold | The Great Wall Gold and Silver Refinery of China | CHINA |
| Gold | The Refinery of Shandong Gold Mining Co. Ltd | CHINA |
| Gold | Tokuriki Honten Co., Ltd | JAPAN |
| Gold | Tongling nonferrous Metals Group Co.,Ltd | CHINA |
| Gold | Torecom | KOREA, REPUBLIC OF |
| Gold | Umicore Brasil Ltda | BRAZIL |
| Gold | Umicore Precious Metals Thailand | THAILAND |
| Gold | Umicore SA Business Unit Precious Metals Refining | BELGIUM |
| Gold | United Precious Metal Refining, Inc. | UNITED STATES |
| Gold | Valcambi SA | SWITZERLAND |
| Gold | Western Australian Mint trading as The Perth Mint | AUSTRALIA |
| Gold | YAMAMOTO PRECIOUS METAL CO., LTD. | JAPAN |
| Gold | Yokohama Metal Co Ltd | JAPAN |
| Gold | Yunnan Copper Industry Co Ltd | CHINA |
| Gold | Zhongyuan Gold Smelter of Zhongjin Gold Corporation | CHINA |
| Gold | Zijin Mining Group Co. Ltd | CHINA |
| Tantalum | Gannon & Scott | UNITED STATES |
| Tantalum | Changsha South Tantalum Niobium Co., Ltd. | CHINA |
| Tantalum | Conghua Tantalum and Niobium Smeltry | CHINA |
| Tantalum | Duoluoshan | CHINA |
| Tantalum | Exotech Inc. | UNITED STATES |
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| Tantalum | F&X Electro-Materials Ltd. | CHINA |
| Tantalum | Global Advanced Metals | UNITED STATES |
| Tantalum | Guangdong Zhiyuan New Material Co., Ltd. | CHINA |
| Tantalum | H.C. Starck Group | GERMANY |
| Tantalum | Hi-Temp | UNITED STATES |
| Tantalum | JiuJiang JinXin Nonferrous Metals Co., Ltd. | CHINA |
| Tantalum | Jiujiang Tanbre Co., Ltd. | CHINA |
| Tantalum | King-Tan Tantalum Industry Ltd | CHINA |
| Tantalum | LSM Brasil S.A. | BRAZIL |
| Tantalum | Metallurgical Products India (Pvt.) Ltd. | INDIA |
| Tantalum | Mineração Taboca S.A. | BRAZIL |
| Tantalum | Mitsui Mining & Smelting | JAPAN |
| Tantalum | Molycorp Silmet A.S. | ESTONIA |
| Tantalum | Ningxia Orient Tantalum Industry Co., Ltd. | CHINA |
| Tantalum | Plansee | AUSTRIA |
| Tantalum | QuantumClean | UNITED STATES |
| Tantalum | RFH Tantalum Smeltry Co., Ltd | CHINA |
| Tantalum | Shanghai Jiangxi Metals Co. Ltd | CHINA |
| Tantalum | Solikamsk Metal Works | RUSSIAN FEDERATION |
| Tantalum | Taki Chemicals | JAPAN |
| Tantalum | Tantalite Resources | SOUTH AFRICA |
| Tantalum | Telex | UNITED STATES |
| Tantalum | Ulba | KAZAKHSTAN |
| Tantalum | Zhuzhou Cement Carbide | CHINA |
| Tantalum | Yichun Jin Yang Rare Metal Co., Ltd | CHINA |
| Tantalum | Hengyang King Xing Lifeng New Materials Co., Ltd. | CHINA |
| Tantalum | Jiangxi Dinghai Tantalum & Niobium Co., LTD | CHINA |
| Tantalum | KEMET Blue Metals | MEXICO |
| Tantalum | Plansee SE Liezen | AUSTRIA |
| Tantalum | H.C. Starck Co., Ltd. | THAILAND |
| Tantalum | H.C. Starck GmbH Goslar | GERMANY |
| Tantalum | H.C. Starck GmbH Laufenburg | GERMANY |
| Tantalum | H.C. Starck Hermsdorf GmbH | GERMANY |
| Tantalum | H.C. Starck Inc. | UNITED STATES |
| Tantalum | H.C. Starck Ltd. | JAPAN |
| Tantalum | H.C. Starck Smelting GmbH & Co.KG | GERMANY |
| Tantalum | Plansee SE Reutte | AUSTRIA |
| Tantalum | Global Advanced Metals Boyertown | UNITED STATES |
| Tantalum | Global Advanced Metals Aizu | JAPAN |
| Tantalum | Kemet Blue Powder | UNITED STATES |
| Tin | China Rare Metal Materials Company | CHINA |
| Tin | CNMC (Guangxi) PGMA Co. Ltd. | CHINA |
| Tin | Alpha | UNITED STATES |
| Tin | Cooper Santa | BRAZIL |
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| Tin | CV Gita Pesona | INDONESIA |
| Tin | CV JusTindo | INDONESIA |
| Tin | CV Makmur Jaya | INDONESIA |
| Tin | CV Nurjanah | INDONESIA |
| Tin | CV Serumpun Sebalai | INDONESIA |
| Tin | CV United Smelting | INDONESIA |
| Tin | Dowa | JAPAN |
| Tin | EM Vinto | BOLIVIA |
| Tin | Estanho de Rondônia S.A. | BRAZIL |
| Tin | Fenix Metals | POLAND |
| Tin | Gejiu Non-Ferrous Metal Processing Co. Ltd. | CHINA |
| Tin | Gejiu Zi-Li | CHINA |
| Tin | Huichang Jinshunda Tin Co. Ltd | CHINA |
| Tin | Jiangxi Nanshan | CHINA |
| Tin | Gejiu Kai Meng Industry and Trade LLC | CHINA |
| Tin | Linwu Xianggui Smelter Co | CHINA |
| Tin | China Tin Group Co., Ltd. | CHINA |
| Tin | Liuzhou China Tin | CHINA |
| Tin | Malaysia Smelting Corporation (MSC) | MALAYSIA |
| Tin | Metallo Chimique | BELGIUM |
| Tin | Mineração Taboca S.A. | BRAZIL |
| Tin | Minmetals Ganzhou Tin Co. Ltd. | CHINA |
| Tin | Minsur | PERU |
| Tin | Mitsubishi Materials Corporation | JAPAN |
| Tin | Novosibirsk Integrated Tin Works | RUSSIAN FEDERATION |
| Tin | O.M. Manufacturing (Thailand) Co., Ltd. | THAILAND |
| Tin | OMSA | BOLIVIA |
| Tin | PT Alam Lestari Kencana | INDONESIA |
| Tin | PT Artha Cipta Langgeng | INDONESIA |
| Tin | PT Babel Inti Perkasa | INDONESIA |
| Tin | PT Babel Surya Alam Lestari | INDONESIA |
| Tin | PT Bangka Kudai Tin | INDONESIA |
| Tin | PT Bangka Putra Karya | INDONESIA |
| Tin | PT Bangka Timah Utama Sejahtera | INDONESIA |
| Tin | PT Bangka Tin Industry | INDONESIA |
| Tin | PT Belitung Industri Sejahtera | INDONESIA |
| Tin | PT BilliTin Makmur Lestari | INDONESIA |
| Tin | PT Bukit Timah | INDONESIA |
| Tin | PT DS Jaya Abadi | INDONESIA |
| Tin | PT Eunindo Usaha Mandiri | INDONESIA |
| Tin | PT Fang Di MulTindo | INDONESIA |
| Tin | PT HP Metals Indonesia | INDONESIA |
| Tin | PT Karimun Mining | INDONESIA |
| Tin | PT Koba Tin | INDONESIA |
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| Tin | PT Mitra Stania Prima | INDONESIA |
| Tin | PT Panca Mega Persada | INDONESIA |
| Tin | PT Prima Timah Utama | INDONESIA |
| Tin | PT REFINED BANGKA TIN | INDONESIA |
| Tin | PT Sariwiguna Binasentosa | INDONESIA |
| Tin | PT Seirama Tin investment | INDONESIA |
| Tin | PT Stanindo Inti Perkasa | INDONESIA |
| Tin | PT Sumber Jaya Indah | INDONESIA |
| Tin | PT Supra Sukses Trinusa | INDONESIA |
| Tin | PT Tambang Timah | INDONESIA |
| Tin | PT Timah (Persero), Tbk | INDONESIA |
| Tin | PT Pelat Timah Nusantara Tbk | INDONESIA |
| Tin | PT Tinindo Inter Nusa | INDONESIA |
| Tin | PT Tommy Utama | INDONESIA |
| Tin | PT Yinchendo Mining Industry | INDONESIA |
| Tin | Rui Da Hung | TAIWAN |
| Tin | Soft Metais, Ltda. | BRAZIL |
| Tin | Thaisarco | THAILAND |
| Tin | White Solder Metalurgia e Mineração Ltda. | BRAZIL |
| Tin | Yunnan Chengfeng Non-ferrous Metals Co.,Ltd. | CHINA |
| Tin | Yunnan Tin Company, Ltd. | CHINA |
| Tin | Magnu's Minerais Metais e Ligas LTDA | BRAZIL |
| Tin | Melt Metais e Ligas S/A | BRAZIL |
| Tin | PT ATD Makmur Mandiri Jaya | INDONESIA |
| Tin | O.M. Manufacturing Philippines, Inc. | PHILIPPINES |
| Tin | PT Inti Stania Prima | INDONESIA |
| Tungsten | A.L.M.T. Corp. | JAPAN |
| Tungsten | ALMT | CHINA |
| Tungsten | ATI Tungsten Materials | UNITED STATES |
| Tungsten | Kennametal Huntsville | UNITED STATES |
| Tungsten | Guangdong Xianglu Tungsten Co., Ltd. | CHINA |
| Tungsten | Chongyi Zhangyuan Tungsten Co Ltd | CHINA |
| Tungsten | Dayu Weiliang Tungsten Co., Ltd. | CHINA |
| Tungsten | Fujian Jinxin Tungsten Co., Ltd. | CHINA |
| Tungsten | Global Tungsten & Powders Corp. | UNITED STATES |
| Tungsten | HC Starck GmbH | GERMANY |
| Tungsten | Hi-Temp | UNITED STATES |
| Tungsten | Hunan Chenzhou Mining Group Co., Ltd. | CHINA |
| Tungsten | Hunan Chun-Chang Nonferrous Smelting & Concentrating Co., Ltd. | CHINA |
| Tungsten | Japan New Metals Co Ltd | JAPAN |
| Tungsten | Ganzhou Non-ferrous Metals Smelting Co., Ltd. | CHINA |
| Tungsten | Ganzhou Huaxing Tungsten Products Co., Ltd. | CHINA |
| Tungsten | Kennametal Fallon | UNITED STATES |
| Tungsten | Tejing (Vietnam) Tungsten Co., Ltd. | VIETNAM |
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| Tungsten | Vietnam Youngsun Tungsten Industry Co., Ltd | VIETNAM |
| Tungsten | Wolfram Bergbau und Hütten AG | AUSTRIA |
| Tungsten | Wolfram Company CJSC | RUSSIAN FEDERATION |
| Tungsten | Xiamen Tungsten Co., Ltd. | CHINA |
| Tungsten | Xinhai Rendan Shaoguan Tungsten Co., Ltd. | CHINA |
| Tungsten | Zhuzhou Cemented Carbide Group Co Ltd | CHINA |
| Tungsten | Jiangxi Minmetals Gao'an Non-ferrous Metals Co., Ltd. | CHINA |
| Tungsten | Ganzhou Jiangwu Ferrotungsten Co., Ltd. | CHINA |
| Tungsten | Jiangxi Yaosheng Tungsten Co., Ltd. | CHINA |
| Tungsten | Jiangxi Xinsheng Tungsten Industry Co., Ltd. | CHINA |
| Tungsten | Jiangxi Tonggu Non-ferrous Metallurgical & Chemical Co., Ltd. | CHINA |
| Tungsten | Malipo Haiyu Tungsten Co., Ltd. | CHINA |
| Tungsten | Xiamen Tungsten (H.C.) Co., Ltd. | CHINA |
| Tungsten | Jiangxi Gan Bei Tungsten Co., Ltd. | CHINA |
| Tungsten | Jiangxi Richsea New Materials Co., Ltd. | CHINA |
| Tungsten | Ganzhou Grand Sea W & Mo Group Co Ltd | CHINA |
| Tungsten | Ganzhou Seadragon W & Mo Co., Ltd. | CHINA |
| Tungsten | Chenzhou Diamond Tungsten Products Co., Ltd. | CHINA |
| Tungsten | Dayu Jincheng Tungsten Industry Co., Ltd. | CHINA |
| Tungsten | Ganxian Shirui New Material Co., Ltd. | CHINA |
| Tungsten | H.C. Starck GmbH | GERMANY |
| Tungsten | H.C. Starck Smelting GmbH & Co.KG | GERMANY |
| Tungsten | Nui Phao H.C. Starck Tungsten Chemicals Manufacturing LLC | VIETNAM |
| Tungsten | Jiangwu H.C. Starck Tungsten Products Co., Ltd. | CHINA |
* A number of smelter names on this list are repeated because they (1) represent separate smelters with unique CID numbers but share similar names or (2) were used for processing more than one subject material.
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