UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549




FORM SD


SPECIALIZED DISCLOSURE REPORT




MDU Resources Group, Inc.
(Exact name of registrant as specified in its charter)



Delaware1-0348030-1133956
(State or other jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)



1200 West Century Avenue
P.O. Box 5650
Bismarck, North Dakota 58506-5650
(Address of principal executive offices)
(Zip Code)

Jason L. Vollmer
(701) 530-1000
(Name and telephone number, including area code,
of the person to contact in connection with this report)



Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

xRule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2023.







Section 1 - Conflict Minerals Disclosure

Items 1.01 and 1.02 Conflict Minerals Disclosure and Report, Exhibit

Conflict Minerals Disclosure

A copy of MDU Resources Group, Inc.’s (the “Company’s”) Conflict Minerals Report for the 2023 reporting period is filed as Exhibit 1.01 hereto and is publicly available at https://www.mdu.com/about-us/integrity. The content of the Company’s website referred to in this Specialized Disclosure Report on Form SD is included for general information only and is not incorporated by reference into this Form SD.


Section 2 – Exhibits

Item 2.01 Exhibits

2



SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.


Date: May 22, 2024.

MDU RESOURCES GROUP, INC.
By:/s/ Jason L. Vollmer
Jason L. Vollmer
Vice President, Chief Financial Officer and Treasurer

3

Exhibit 1.01


MDU Resources Group, Inc.

Conflict Minerals Report
For The Year Ended December 31, 2023

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, 2023.

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 2023 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
The Company, through its wholly owned subsidiary Everus Construction, Inc. (“Everus Construction”), provides inside and outside specialty contracting services. Everus Construction, through its wholly owned subsidiary Wagner-Smith Equipment Co., manufactures construction equipment consisting of electric transmission line pullers, tensioners, reel stands, reel carriers, and electric transmission pole and material trailers (the “Construction Equipment”).

Based upon our internal assessment, certain of the Construction Equipment products that are either manufactured or contracted to be manufactured by Everus Construction contain Conflict Minerals that may be necessary to the functionality of the product.

1


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.

Reasonable Country of Origin Inquiry
We have conducted a reasonable country of origin inquiry (an “RCOI”) regarding the Conflict Minerals purchased by the Company that was reasonably designed to determine whether any such Conflict Minerals originated in the Democratic Republic of the Congo or adjoining countries (collectively, the “Covered Countries”) or were from recycled or scrap sources. We identified 90 suppliers that provided components or engaged in manufacturing activities for use in our Construction Equipment products that may contain Conflict Minerals during calendar year 2023. In January 2024, we contacted these suppliers and provided them with a copy of our Conflict Minerals Policy, the Responsible Minerals Initiative (“RMI”) Conflict Minerals Reporting Template (the “Template”), and an instructional letter to assist them in completing their responses. The Template includes questions regarding a supplier’s applicable policy, engagement with its direct suppliers, and a listing of the smelters and refiners the supplier 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 1, 2024, and conducted multiple follow-ups by email and telephone with the suppliers that did not respond to the initial request.

Design of Due Diligence
Our Conflict Minerals due diligence measures have been designed to conform to the due diligence-related steps of 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 Minerals contained in our Construction Equipment.

2


We sent our suppliers a letter that included a copy of our Corporate Conflict Minerals Policy, the Template, and instructions, and requested that they complete and return the Template.
We requested that our suppliers adopt and communicate their Conflict Minerals 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 Responsible Minerals Assurance Process (an “RMAP”) audit by RMI and the list of smelters that have received a “conformant” designation under the RMAP.
We made our Conflict Minerals Report available on our website at https://www.mdu.com/about-us/integrity.

Due Diligence Results
For reporting year 2023, we surveyed 90 suppliers of materials for our Construction Equipment using the Template. Of the suppliers surveyed, 72 percent (65 suppliers) responded to our request for 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’ responses are similarly reliant upon information provided by their suppliers.

As the result of our due diligence, we have gathered 368 smelter names from our supply chain. See Annex 1 for the names and locations of such smelters. Of these, 203 have been designated as conformant under the RMAP. An additional 5 are active facilities that have committed to undergo an RMAP audit. Of the 160 remaining reported smelters, all 160 have been determined to be legitimate processing facilities by the RMI and have been allocated a Smelter Identification CID number.


3


We requested mine or location of origin information for the necessary Conflict Minerals from each of our suppliers using the Template. Many of our suppliers were unable to obtain reliable mine or location-of-origin data for their necessary Conflict Minerals.

Four smelters, Luna Smelter, Ltd. and PowerX Ltd. in Rwanda, Mining Minerals Resources SARL in the Democratic Republic of the Congo, and African Gold Refinery in Uganda, were identified by some of our suppliers as having its location in a Covered Country. Luna Smelter, Ltd., PowerX Ltd., and Mining Minerals Resources SARL are listed as conformant smelters by the RMI, while African Gold Refinery is not currently listed as a conformant or active facility by the RMI.

Determination
Based on our due diligence efforts, we do not have sufficient information to conclusively determine the countries of origin of the Conflict Minerals in our Construction Equipment or whether the Conflict Minerals are from recycled or scrap sources. On the basis of the due diligence measures described in this Report, we are unable to rule out 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 benefited 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 enhance 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:
Track and add new suppliers to our Conflict Minerals program as they enter our supply chain; and
Drive our suppliers to obtain current, accurate, and complete information about their smelters and refiners of Conflict Minerals.

4


ANNEX 1

MetalSmelter Name-Auto PopulatedSmelter Country
GoldAdvanced Chemical CompanyUNITED STATES OF AMERICA
GoldAida Chemical Industries Co., Ltd.JAPAN
GoldAgosi AGGERMANY
GoldAlmalyk Mining and Metallurgical Complex (AMMC)UZBEKISTAN
GoldAngloGold Ashanti Corrego do Sitio MineracaoBRAZIL
GoldArgor-Heraeus S.A.SWITZERLAND
GoldAsahi Pretec Corp.JAPAN
GoldAsaka Riken Co., Ltd.JAPAN
GoldAtasay Kuyumculuk Sanayi Ve Ticaret A.S.TURKEY
GoldAurubis AGGERMANY
GoldBangko Sentral ng Pilipinas (Central Bank of the Philippines)PHILIPPINES
GoldBoliden ABSWEDEN
GoldC. Hafner GmbH + Co. KGGERMANY
GoldCaridadMEXICO
GoldCCR Refinery - Glencore Canada CorporationCANADA
GoldCendres + Metaux S.A.SWITZERLAND
GoldYunnan Copper Industry Co., Ltd.CHINA
GoldChimet S.p.A.ITALY
GoldChugai MiningJAPAN
GoldDaye Non-Ferrous Metals Mining Ltd.CHINA
GoldDSC (Do Sung Corporation)KOREA, REPUBLIC OF
GoldDowaJAPAN
GoldEco-System Recycling Co., Ltd. East PlantJAPAN
GoldJSC Novosibirsk RefineryRUSSIAN FEDERATION
GoldRefinery of Seemine Gold Co., Ltd.CHINA
GoldGuoda Safina High-Tech Environmental Refinery Co., Ltd.CHINA
GoldHangzhou Fuchunjiang Smelting Co., Ltd.CHINA
GoldLT Metal Ltd.KOREA, REPUBLIC OF
GoldHeimerle + Meule GmbHGERMANY
GoldHeraeus Metals Hong Kong Ltd.CHINA
GoldHeraeus Germany GmbH Co. KGGERMANY
GoldHunan Chenzhou Mining Co., Ltd.CHINA
GoldHunan Guiyang yinxing Nonferrous Smelting Co., Ltd.CHINA
GoldHwaSeong CJ CO., LTD.KOREA, REPUBLIC OF
GoldInner Mongolia Qiankun Gold and Silver Refinery Share Co., Ltd.CHINA
GoldIshifuku Metal Industry Co., Ltd.JAPAN
GoldIstanbul Gold RefineryTURKEY
GoldJapan MintJAPAN
GoldJiangxi Copper Co., Ltd.CHINA
GoldAsahi Refining USA Inc.UNITED STATES OF AMERICA
GoldAsahi Refining Canada Ltd.CANADA
GoldJSC Ekaterinburg Non-Ferrous Metal Processing PlantRUSSIAN FEDERATION
GoldJSC UralelectromedRUSSIAN FEDERATION
GoldJX Nippon Mining & Metals Co., Ltd.JAPAN
A-1


MetalSmelter Name-Auto PopulatedSmelter Country
GoldKazakhmys Smelting LLCKAZAKHSTAN
GoldKazzincKAZAKHSTAN
GoldKennecott Utah Copper LLCUNITED STATES OF AMERICA
GoldKojima Chemicals Co., Ltd.JAPAN
GoldKyrgyzaltyn JSCKYRGYZSTAN
GoldL'azurde Company For JewelrySAUDI ARABIA
GoldLingbao Gold Co., Ltd.CHINA
GoldLingbao Jinyuan Tonghui Refinery Co., Ltd.CHINA
GoldLS-NIKKO Copper Inc.KOREA, REPUBLIC OF
GoldLuoyang Zijin Yinhui Gold Refinery Co., Ltd.CHINA
GoldMaterionUNITED STATES OF AMERICA
GoldMatsuda Sangyo Co., Ltd.JAPAN
GoldMetalor Technologies (Suzhou) Ltd.CHINA
GoldMetalor Technologies (Hong Kong) Ltd.CHINA
GoldMetalor Technologies (Singapore) Pte., Ltd.SINGAPORE
GoldMetalor Technologies S.A.SWITZERLAND
GoldMetalor USA Refining CorporationUNITED STATES OF AMERICA
GoldMetalurgica Met-Mex Penoles S.A. De C.V.MEXICO
GoldMitsubishi Materials CorporationJAPAN
GoldMitsui Mining and Smelting Co., Ltd.JAPAN
GoldMoscow Special Alloys Processing PlantRUSSIAN FEDERATION
GoldNadir Metal Rafineri San. Ve Tic. A.S.TURKEY
GoldNavoi Mining and Metallurgical CombinatUZBEKISTAN
GoldNihon Material Co., Ltd.JAPAN
GoldOhura Precious Metal Industry Co., Ltd.JAPAN
GoldOJSC "The Gulidov Krasnoyarsk Non-Ferrous Metals Plant" (OJSC Krastsvetmet)RUSSIAN FEDERATION
GoldMKS PAMP SASWITZERLAND
GoldPenglai Penggang Gold Industry Co., Ltd.CHINA
GoldPrioksky Plant of Non-Ferrous MetalsRUSSIAN FEDERATION
GoldPT Aneka Tambang (Persero) TbkINDONESIA
GoldPX Precinox S.A.SWITZERLAND
GoldRand Refinery (Pty) Ltd.SOUTH AFRICA
GoldRoyal Canadian MintCANADA
GoldSabin Metal Corp.UNITED STATES OF AMERICA
GoldSamduck Precious MetalsKOREA, REPUBLIC OF
GoldSamwon Metals Corp.KOREA, REPUBLIC OF
GoldSEMPSA Joyeria Plateria S.A.SPAIN
GoldShandong Tiancheng Biological Gold Industrial Co., Ltd.CHINA
GoldShandong Zhaojin Gold & Silver Refinery Co., Ltd.CHINA
GoldSichuan Tianze Precious Metals Co., Ltd.CHINA
GoldSOE Shyolkovsky Factory of Secondary Precious MetalsRUSSIAN FEDERATION
GoldSolar Applied Materials Technology Corp.TAIWAN, PROVINCE OF CHINA
GoldSumitomo Metal Mining Co., Ltd.JAPAN
GoldSuper Dragon Technology Co., Ltd.TAIWAN, PROVINCE OF CHINA
A-2


MetalSmelter Name-Auto PopulatedSmelter Country
GoldTanaka Kikinzoku Kogyo K.K.JAPAN
GoldGreat Wall Precious Metals Co., Ltd. of CBPMCHINA
GoldShandong Gold Smelting Co., Ltd.CHINA
GoldTokuriki Honten Co., Ltd.JAPAN
GoldTongling Nonferrous Metals Group Co., Ltd.CHINA
GoldTorecomKOREA, REPUBLIC OF
GoldUmicore S.A. Business Unit Precious Metals RefiningBELGIUM
GoldUnited Precious Metal Refining, Inc.UNITED STATES OF AMERICA
GoldValcambi S.A.SWITZERLAND
GoldWestern Australian Mint (T/a The Perth Mint)AUSTRALIA
GoldYamakin Co., Ltd.JAPAN
GoldYokohama Metal Co., Ltd.JAPAN
GoldZhongyuan Gold Smelter of Zhongjin Gold CorporationCHINA
GoldGold Refinery of Zijin Mining Group Co., Ltd.CHINA
GoldMorris and WatsonNEW ZEALAND
GoldSAFINA A.S.CZECHIA
GoldGuangdong Jinding Gold LimitedCHINA
GoldUmicore Precious Metals ThailandTHAILAND
GoldGeib Refining CorporationUNITED STATES OF AMERICA
GoldMMTC-PAMP India Pvt., Ltd.INDIA
GoldKGHM Polska Miedz Spolka AkcyjnaPOLAND
GoldFidelity Printers and Refiners Ltd.ZIMBABWE
GoldSingway Technology Co., Ltd.TAIWAN, PROVINCE OF CHINA
GoldShandong Humon Smelting Co., Ltd.CHINA
GoldShenzhen Zhonghenglong Real Industry Co., Ltd.CHINA
GoldAl Etihad Gold Refinery DMCCUNITED ARAB EMIRATES
GoldEmirates Gold DMCCUNITED ARAB EMIRATES
GoldInternational Precious Metal RefinersUNITED ARAB EMIRATES
GoldKaloti Precious MetalsUNITED ARAB EMIRATES
GoldSudan Gold RefinerySUDAN
GoldT.C.A S.p.AITALY
GoldREMONDIS PMR B.V.NETHERLANDS
GoldFujairah Gold FZCUNITED ARAB EMIRATES
GoldIndustrial Refining CompanyBELGIUM
GoldShirpur Gold Refinery Ltd.INDIA
GoldKorea Zinc Co., Ltd.KOREA, REPUBLIC OF
GoldMarsam MetalsBRAZIL
GoldTOO Tau-Ken-AltynKAZAKHSTAN
GoldAbington Reldan Metals, LLCUNITED STATES OF AMERICA
GoldShenzhen CuiLu Gold Co., Ltd.CHINA
GoldAlbino Mountinho Lda.PORTUGAL
GoldSAAMPFRANCE
GoldL'Orfebre S.A.ANDORRA
Gold8853 S.p.A.ITALY
GoldItalpreziosiITALY
A-3


MetalSmelter Name-Auto PopulatedSmelter Country
GoldWIELAND Edelmetalle GmbHGERMANY
GoldOgussa Osterreichische Gold- und Silber-Scheideanstalt GmbHAUSTRIA
GoldAU Traders and RefinersSOUTH AFRICA
GoldGGC Gujrat Gold Centre Pvt. Ltd.INDIA
GoldSai RefineryINDIA
GoldModeltech Sdn BhdMALAYSIA
GoldBangalore RefineryINDIA
GoldKyshtym Copper-Electrolytic Plant ZAORUSSIAN FEDERATION
GoldDegussa Sonne / Mond Goldhandel GmbHGERMANY
GoldPease & CurrenUNITED STATES OF AMERICA
GoldJALAN & CompanyINDIA
GoldSungEel HiMetal Co., Ltd.KOREA, REPUBLIC OF
GoldPlanta Recuperadora de Metales SpACHILE
GoldABC Refinery Pty Ltd.AUSTRALIA
GoldSafimet S.p.AITALY
GoldState Research Institute Center for Physical Sciences and TechnologyLITHUANIA
GoldAfrican Gold RefineryUGANDA
GoldGold Coast RefineryGHANA
GoldNH Recytech CompanyKOREA, REPUBLIC OF
GoldQG Refining, LLCUNITED STATES OF AMERICA
GoldDijllah Gold Refinery FZCUNITED ARAB EMIRATES
GoldCGR Metalloys Pvt Ltd.INDIA
GoldSovereign MetalsINDIA
GoldEco-System Recycling Co., Ltd. North PlantJAPAN
GoldEco-System Recycling Co., Ltd. West PlantJAPAN
GoldAugmont Enterprises Private LimitedINDIA
GoldKundan Care Products Ltd.INDIA
GoldEmerald Jewel Industry India Limited (Unit 1)INDIA
GoldEmerald Jewel Industry India Limited (Unit 2)INDIA
GoldEmerald Jewel Industry India Limited (Unit 3)INDIA
GoldEmerald Jewel Industry India Limited (Unit 4)INDIA
GoldK.A. RasmussenNORWAY
GoldAlexy MetalsUNITED STATES OF AMERICA
GoldMD OverseasINDIA
GoldMetallix Refining Inc.UNITED STATES OF AMERICA
GoldMetal Concentrators SA (Pty) Ltd.SOUTH AFRICA
GoldWEEEREFININGFRANCE
GoldGold by Gold ColombiaCOLOMBIA
GoldDongwu Gold GroupCHINA
GoldSam Precious MetalsUNITED ARAB EMIRATES
GoldCoimpa Industrial LTDABRAZIL
TantalumChangsha South Tantalum Niobium Co., Ltd.CHINA
TantalumGuangdong Rising Rare Metals-EO Materials Ltd.CHINA
TantalumExotech Inc.UNITED STATES OF AMERICA
TantalumF&X Electro-Materials Ltd.CHINA
A-4


MetalSmelter Name-Auto PopulatedSmelter Country
TantalumXIMEI RESOURCES (GUANGDONG) LIMITEDCHINA
TantalumJiuJiang JinXin Nonferrous Metals Co., Ltd.CHINA
TantalumJiujiang Tanbre Co., Ltd.CHINA
TantalumAMG BrasilBRAZIL
TantalumMetallurgical Products India Pvt., Ltd.INDIA
TantalumMineracao Taboca S.A.BRAZIL
TantalumMitsui Mining and Smelting Co., Ltd.JAPAN
TantalumNPM Silmet ASESTONIA
TantalumNingxia Orient Tantalum Industry Co., Ltd.CHINA
TantalumQuantumCleanUNITED STATES OF AMERICA
TantalumYanling Jincheng Tantalum & Niobium Co., Ltd.CHINA
TantalumSolikamsk Magnesium Works OAORUSSIAN FEDERATION
TantalumTaki Chemical Co., Ltd.JAPAN
TantalumTelex MetalsUNITED STATES OF AMERICA
TantalumUlba Metallurgical Plant JSCKAZAKHSTAN
TantalumZhuzhou Cemented Carbide Group Co., Ltd.CHINA
TantalumHengyang King Xing Lifeng New Materials Co., Ltd.CHINA
TantalumD Block Metals, LLCUNITED STATES OF AMERICA
TantalumFIR Metals & Resource Ltd.CHINA
TantalumJiujiang Zhongao Tantalum & Niobium Co., Ltd.CHINA
TantalumXinXing HaoRong Electronic Material Co., Ltd.CHINA
TantalumJiangxi Dinghai Tantalum & Niobium Co., Ltd.CHINA
TantalumKEMET de MexicoMEXICO
TantalumTANIOBIS Co., Ltd.THAILAND
TantalumTANIOBIS GmbHGERMANY
TantalumQSIL Metals Hermsdorf GmbHGERMANY
TantalumMaterion Newton Inc.UNITED STATES OF AMERICA
TantalumTANIOBIS Japan Co., Ltd.JAPAN
TantalumTANIOBIS Smelting GmbH & Co. KGGERMANY
TantalumPlansee SE ReutteAUSTRIA
TantalumGlobal Advanced Metals BoyertownUNITED STATES OF AMERICA
TantalumGlobal Advanced Metals AizuJAPAN
TantalumResind Industria e Comercio Ltda.BRAZIL
TantalumJiangxi Tuohong New Raw MaterialCHINA
TantalumJiujiang Janny New Material Co., Ltd.CHINA
TantalumRFH Yancheng Jinye New Material Technology Co., Ltd.CHINA
Tantalum5D Production OUESTONIA
TantalumPowerX Ltd.RWANDA
TinChenzhou Yunxiang Mining and Metallurgy Co., Ltd.CHINA
TinAlphaUNITED STATES OF AMERICA
TinPT Aries Kencana SejahteraINDONESIA
TinPT Premium Tin IndonesiaINDONESIA
TinCV United SmeltingINDONESIA
TinDowaJAPAN
A-5


MetalSmelter Name-Auto PopulatedSmelter Country
TinEM VintoBOLIVIA (PLURINATIONAL STATE OF)
TinEstanho de Rondonia S.A.BRAZIL
TinFeinhütte Halsbrücke GmbHGERMANY
TinFenix MetalsPOLAND
TinGejiu Non-Ferrous Metal Processing Co., Ltd.CHINA
TinGejiu Zili Mining And Metallurgy Co., Ltd.CHINA
TinGejiu Kai Meng Industry and Trade LLCCHINA
TinChina Tin Group Co., Ltd.CHINA
TinMalaysia Smelting Corporation (MSC)MALAYSIA
TinMetallic Resources, Inc.UNITED STATES OF AMERICA
TinMineracao Taboca S.A.BRAZIL
TinMinsurPERU
TinMitsubishi Materials CorporationJAPAN
TinJiangxi New Nanshan Technology Ltd.CHINA
TinNovosibirsk Tin CombineRUSSIAN FEDERATION
TinO.M. Manufacturing (Thailand) Co., Ltd.THAILAND
TinOperaciones Metalurgicas S.A.BOLIVIA (PLURINATIONAL STATE OF)
TinPT Artha Cipta LanggengINDONESIA
TinPT Babel Inti PerkasaINDONESIA
TinPT Babel Surya Alam LestariINDONESIA
TinPT Bangka Tin IndustryINDONESIA
TinPT Belitung Industri SejahteraINDONESIA
TinPT Bukit TimahINDONESIA
TinPT DS Jaya AbadiINDONESIA
TinPT Mitra Stania PrimaINDONESIA
TinPT Panca Mega PersadaINDONESIA
TinPT Prima Timah UtamaINDONESIA
TinPT Refined Bangka TinINDONESIA
TinPT Sariwiguna BinasentosaINDONESIA
TinPT Stanindo Inti PerkasaINDONESIA
TinPT Timah Tbk KundurINDONESIA
TinPT Timah Tbk MentokINDONESIA
TinPT Timah NusantaraINDONESIA
TinPT Tinindo Inter NusaINDONESIA
TinPT Tommy UtamaINDONESIA
TinRui Da HungTAIWAN, PROVINCE OF CHINA
TinSoft Metais Ltda.BRAZIL
TinThaisarcoTHAILAND
TinGejiu Yunxin Nonferrous Electrolysis Co., Ltd.CHINA
TinVQB Mineral and Trading Group JSCVIET NAM
TinWhite Solder Metalurgia e Mineracao Ltda.BRAZIL
TinYunnan Chengfeng Non-ferrous Metals Co., Ltd.CHINA
TinTin Smelting Branch of Yunnan Tin Co., Ltd.CHINA
TinCV Venus Inti PerkasaINDONESIA
TinMagnu's Minerais Metais e Ligas Ltda.BRAZIL
A-6


MetalSmelter Name-Auto PopulatedSmelter Country
TinPT Tirus Putra MandiriINDONESIA
TinMelt Metais e Ligas S.A.BRAZIL
TinPT ATD Makmur Mandiri JayaINDONESIA
TinO.M. Manufacturing Philippines, Inc.PHILIPPINES
TinPT Inti Stania PrimaINDONESIA
TinCV Ayi JayaINDONESIA
TinElectro-Mechanical Facility of the Cao Bang Minerals & Metallurgy Joint Stock CompanyVIET NAM
TinNghe Tinh Non-Ferrous Metals Joint Stock CompanyVIET NAM
TinTuyen Quang Non-Ferrous Metals Joint Stock CompanyVIET NAM
TinPT Rajehan AriqINDONESIA
TinPT Cipta Persada MuliaINDONESIA
TinAn Vinh Joint Stock Mineral Processing CompanyVIET NAM
TinResind Industria e Comercio Ltda.BRAZIL
TinSuper LigasBRAZIL
TinAurubis BeerseBELGIUM
TinAurubis BerangoSPAIN
TinPT Bangka Prima TinINDONESIA
TinPT Sukses Inti MakmurINDONESIA
TinThai Nguyen Mining and Metallurgy Co., Ltd.VIET NAM
TinPT Menara Cipta MuliaINDONESIA
TinHuiChang Hill Tin Industry Co., Ltd.CHINA
TinGejiu Fengming Metallurgy Chemical PlantCHINA
TinModeltech Sdn BhdMALAYSIA
TinGuangdong Hanhe Non-Ferrous Metal Co., Ltd.CHINA
TinChifeng Dajingzi Tin Industry Co., Ltd.CHINA
TinPT Bangka SerumpunINDONESIA
TinPongpipat Company LimitedMYANMAR
TinTin Technology & RefiningUNITED STATES OF AMERICA
TinDongguan CiEXPO Environmental Engineering Co., Ltd.CHINA
TinMa'anshan Weitai Tin Co., Ltd.CHINA
TinPT Rajawali Rimba PerkasaINDONESIA
TinLuna Smelter, Ltd.RWANDA
TinYunnan Yunfan Non-ferrous Metals Co., Ltd.CHINA
TinPrecious Minerals and Smelting LimitedINDIA
TinGejiu City Fuxiang Industry and Trade Co., Ltd.CHINA
TinPT Mitra Sukses GlobalindoINDONESIA
TinCRM Fundicao De Metais E Comercio De Equipamentos Eletronicos Do Brasil LtdaBRAZIL
TinCRM SynergiesSPAIN
TinFabrica Auricchio Industria e Comercio Ltda.BRAZIL
TinDS MyanmarMYANMAR
TinPT Putera Sarana Shakti (PT PSS)INDONESIA
TinMining Minerals Resources SARLCONGO, DEMOCRATIC REPUBLIC OF THE
TungstenA.L.M.T. Corp.JAPAN
TungstenKennametal HuntsvilleUNITED STATES OF AMERICA
TungstenGuangdong Xianglu Tungsten Co., Ltd.CHINA
A-7


MetalSmelter Name-Auto PopulatedSmelter Country
TungstenChongyi Zhangyuan Tungsten Co., Ltd.CHINA
TungstenCNMC (Guangxi) PGMA Co., Ltd.CHINA
TungstenFujian Jinxin Tungsten Co., Ltd.CHINA
TungstenGlobal Tungsten & Powders Corp.UNITED STATES OF AMERICA
TungstenHunan Chenzhou Mining Co., Ltd.CHINA
TungstenHunan Jintai New Material Co., Ltd.CHINA
TungstenJapan New Metals Co., Ltd.JAPAN
TungstenGanzhou Huaxing Tungsten Products Co., Ltd.CHINA
TungstenKennametal FallonUNITED STATES OF AMERICA
TungstenTejing (Vietnam) Tungsten Co., Ltd.VIET NAM
TungstenWolfram Bergbau und Hutten AGAUSTRIA
TungstenXiamen Tungsten Co., Ltd.CHINA
TungstenXinhai Rendan Shaoguan Tungsten Co., Ltd.CHINA
TungstenJiangxi Minmetals Gao'an Non-ferrous Metals Co., Ltd.CHINA
TungstenGanzhou Jiangwu Ferrotungsten Co., Ltd.CHINA
TungstenJiangxi Yaosheng Tungsten Co., Ltd.CHINA
TungstenJiangxi Xinsheng Tungsten Industry Co., Ltd.CHINA
TungstenJiangxi Tonggu Non-ferrous Metallurgical & Chemical Co., Ltd.CHINA
TungstenMalipo Haiyu Tungsten Co., Ltd.CHINA
TungstenXiamen Tungsten (H.C.) Co., Ltd.CHINA
TungstenJiangxi Gan Bei Tungsten Co., Ltd.CHINA
TungstenGanzhou Seadragon W & Mo Co., Ltd.CHINA
TungstenAsia Tungsten Products Vietnam Ltd.VIET NAM
TungstenHunan Shizhuyuan Nonferrous Metals Co., Ltd. Chenzhou Tungsten Products BranchCHINA
TungstenSanher Tungsten Vietnam Co., Ltd.VIET NAM
TungstenH.C. Starck Tungsten GmbHGERMANY
TungstenTANIOBIS Smelting GmbH & Co. KGGERMANY
TungstenMasan High-Tech MaterialsVIET NAM
TungstenJiangwu H.C. Starck Tungsten Products Co., Ltd.CHINA
TungstenNiagara Refining LLCUNITED STATES OF AMERICA
TungstenChina Molybdenum Tungsten Co., Ltd.CHINA
TungstenGanzhou Haichuang Tungsten Co., Ltd.CHINA
TungstenHydrometallurg, JSCRUSSIAN FEDERATION
TungstenUnecha Refractory metals plantRUSSIAN FEDERATION
TungstenPhilippine Chuangxin Industrial Co., Inc.PHILIPPINES
TungstenXinfeng Huarui Tungsten & Molybdenum New Material Co., Ltd.CHINA
TungstenACL Metais EireliBRAZIL
TungstenMoliren Ltd.RUSSIAN FEDERATION
TungstenHunan Litian Tungsten Industry Co., Ltd.CHINA
TungstenFujian Ganmin RareMetal Co., Ltd.CHINA
TungstenLianyou Metals Co., Ltd.TAIWAN, PROVINCE OF CHINA
TungstenJSC "Kirovgrad Hard Alloys Plant"RUSSIAN FEDERATION
TungstenNPP Tyazhmetprom LLCRUSSIAN FEDERATION
TungstenHubei Green Tungsten Co., Ltd.CHINA
TungstenAlbasteel Industria e Comercio de Ligas Para Fundicao Ltd.BRAZIL
A-8


MetalSmelter Name-Auto PopulatedSmelter Country
TungstenCronimet Brasil LtdaBRAZIL
TungstenArtek LLCRUSSIAN FEDERATION
TungstenFujian Xinlu Tungsten Co., Ltd.CHINA
TungstenOOO “Technolom” 2RUSSIAN FEDERATION
TungstenOOO “Technolom” 1RUSSIAN FEDERATION
TungstenLLC VostokRUSSIAN FEDERATION
TungstenYUDU ANSHENG TUNGSTEN CO., LTD.CHINA
TungstenHANNAE FOR T Co., Ltd.KOREA, REPUBLIC OF
TungstenTungsten Vietnam Joint Stock CompanyVIET NAM
TungstenNam Viet Cromit Joint Stock CompanyVIET NAM
TungstenDONGKUK INDUSTRIES CO., LTD.KOREA, REPUBLIC OF
A-9

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