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SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549

FORM SD

Specialized Disclosure Report

Commission file number: 001-10533 Commission file number: 000-20122

Rio Tinto plc Rio Tinto Limited ABN 96 004 458 404

(Translation of registrant’s name into English) (Translation of registrant’s name into English)

6 St James’s Square Level 33, 120 Collins Street London, SW1Y 4AD, United Kingdom Melbourne, Victoria 3000, Australia

(Address of principal executive offices) (Address of principal executive offices)

Julie Parent, T: 514-848-8519

(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:

_X_ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2015.

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Section 1 - Conflict Minerals Disclosure Item 1.01 Conflict Minerals Disclosure and Report Rio Tinto plc and Rio Tinto Limited (hereafter “Rio Tinto”, “Group”, “we”, “us” or “our”) are complying with Rule 13p-1 under the Securities Act of 1934 (“Rule”) for the reporting period from January 1 to December 31, 2015. The Rule was adopted by the Securities and Exchange Commission (“SEC”) to implement reporting and disclosure requirements related to conflict minerals as directed by the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (“Dodd-Frank Act”). Rio Tinto's business is finding, mining, and processing mineral resources. Major products are aluminium, copper, diamonds, thermal and metallurgical coal, uranium, gold, industrial minerals (borax, titanium dioxide and salt) and iron ore. Rio Tinto undertook an assessment of all of Rio Tinto’s products and identified subsidiaries of Rio Tinto that are within the scope of the Rule: Kennecott Utah Copper LLC (“Kennecott”); Rio Tinto Fer et Titane inc. (“RTFT”) and QMP Metal Powders (Suzhou) Ltd. (“QMP”); E.C.L. (“ECL”); and RTA Alesa AG (“Alesa”). Information about each of these subsidiaries and former subsidiaries and the Reasonable Country of Origin Inquiry (“RCOI”) is summarized below and in Exhibit 1.01 hereto. Kennecott Kennecott is based in the United States of America and produces gold bars. Kennecott performed a RCOI and determined that gold used in Kennecott’s products did not originate in the Democratic Republic of the Congo or an adjoining country (“Covered Countries”). Kennecott received the Responsible Jewellery Council (“RJC”) Chain of Custody Certification (C0000 0007), which ensures that the gold used in their products is responsibly sourced and does not support conflict in a Covered Country, as defined by the Rule. Kennecott is listed on the Electronics Industry Citizenship Coalition Global e-Sustainability Initiative (“EICC-GeSi”) Conflict Free Gold Refiners List (CID000969) as compliant with the relevant EICC-GeSI relevant Conflict-Free Smelter Program assessment protocol. Additionally, Kennecott is in conformance with London Bullion Market Association (“LBMA”) Responsible Gold Guidance which is required for Good Delivery status. RTFT and QMP RTFT and QMP manufacture iron and steel powders at their respective sites: Sorel-Tracy in Quebec, Canada for RTFT and Suzhou in China for QMP. Both sites produce certain metal powders that include a bronze additive which contains tin. Both RTFT and QMP source the bronze additive from a single supplier who has confirmed that the tin does not come from any of the Covered Countries, as defined by the Rule. ECL and Alesa ECL and Alesa manufactured or contracted to manufacture, machinery used primarily in aluminium smelters. They were divested on 9 July 2015 and 24 November 2015, respectively. Any data in this report is reflective of information gathered prior to the respective dates of the divestment. As set forth in Exhibit 1.01 hereto, Rio Tinto undertook a RCOI and supplier due diligence that employed a combination of measures to determine whether the necessary tin, tungsten, tantalum and/or gold (“3TG”) in ECL and Alesa’s products originated from the Covered Countries. In accordance with the Rule, Rio Tinto has concluded in good faith that until the respective dates of divestment:

a) Rio Tinto has manufactured or contracted to manufacture products as to which 3TGs are necessary to the functionality or production of such products.

b) Based on a RCOI, Rio Tinto believes or has reason to believe that a portion of its necessary 3TGs originated or may have originated in a Covered Country and knows or has reason to believe that those necessary 3TGs may not be from recycle or scrap sources.

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Rio Tinto engaged a third-party service provider, Assent Compliance (“3PSP”), to develop and implement the RCOI undertaken by ECL and Alesa, primarily using the conflict minerals reporting template (“CMRT”) to query suppliers. The survey employed the CMRT which was developed by the EICC-GeSI and The Global e-Sustainability Initiative. The CMRT facilitated general disclosures and information regarding smelters that provide materials to the supplier. It includes questions regarding the supplier’s conflict-free minerals policy, the engagement process with its direct suppliers, and identification of the smelters used by the supplier. ECL and Alesa upgraded their RCOI scoping process by generating a new supplier list for 2015 up to respective dates of divestment. This list was then filtered to remove:

Service providers/suppliers; Indirect materials suppliers; and Inactive suppliers (minimum 1 year since last purchase).

Once the filtering was completed, the list of relevant suppliers for ECL and Alesa was added to the list of suppliers in scope for the RCOI for the Form SD for year ended 2014. 3PSP then conducted the supplier survey portion of the RCOI using the CMRT form as the data exchange standard. During the survey, suppliers were contacted by 3PSP via a platform that enables its users to complete and track supplier communications and allows suppliers to upload completed CMRT forms directly to the platform for red flag assessment and management. Non-responsive suppliers were contacted several times by 3PSP up to the respective dates of divestment of ECL and Alesa. Escalation by Rio Tinto of non-responsive suppliers was not conducted this year due to ECL and Alesa being divested. Training and advice on the completion of the CMRT form was provided to suppliers. Educational materials were available via a supplier resource center and 3PSP support to assist suppliers. Based on the smelter or refiner lists provided by the suppliers, we were aware that there were certified conflict free smelters or refiners that sourced from the Democratic Republic of the Congo (“DRC”) in our supply chain. Certain suppliers were unable to provide the smelters or refiners details. Consequently, the Company was unable to conclude that all products supplied to us were DRC conflict free. In accordance with Rule, the Specialized Disclosure Form (“Form SD”) and the associated Conflict Minerals Report (“CMR”) were posted on Rio Tinto’s web site at http://www.riotinto.com/ourcommitment/conflict-minerals-16871.aspx . Item 1.02 Exhibit Rio Tinto has included its CMR as Exhibit 1.01 to this Form SD. Section 2 – Exhibits Item 2.01 Exhibits Exhibit 1.01 – CMR

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SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorised. Rio Tinto plc Rio Tinto Limited (Registrant) (Registrant) /s/ Eleanor Evans______ /s/ Eleanor Evans_______ Name Eleanor Evans Name Eleanor Evans Title Company Secretary Title Joint Company Secretary Date 27 May 2016 Date 27 May 2016

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Item 1.01 Exhibit Conflict Mineral Report Kennecott Kennecott performed a RCOI and determined that gold used in Kennecott’s products did not originate in a Covered Country. This RCOI involved implementation of a chain of custody management system for its gold production that is certified by the RJC. The raw materials purchasing procedure, a component of the chain of custody management system, requires that all purchased copper concentrate and gold slime materials have a certificate of origin that is obtained and reviewed prior to material purchase. The RJC issued Kennecott a Chain of Custody Certification (C0000 0007), which ensures that the gold used in its products is responsibly sourced and does not support conflict in Covered Countries. Further, Kennecott is listed on the EICC-GeSi Conflict Free Gold Refiners List (CID000969) as compliant with the relevant EICC-GeSI relevant Conflict-Free Smelter Program assessment protocol. Based on the chain of custody management system, the EICC-GeSi Conflict Free Gold Refiners certification and the RJC Chain of Custody certification, Kennecott has concluded that none of the gold used in its products originates in a Covered Country. RTFT and QMP RTFT and QMP performed a RCOI on the single supplier that supplies 3TGs for use in their metal powders. This supplier was found to source tin only from conflict free certified smelters operating outside of the Covered Countries. ECL and Alesa After completion of the RCOI for ECL and Alesa, Rio Tinto had reason to believe that a portion of the 3TGs in their supply chain may have originated in the Covered Countries. Rio Tinto completed a due diligence exercise on the 3TGs’source and chain of custody and herein provides this CMR, as of the respective dates of divestments, which includes a description of those due diligence measures. Due Diligence for ECL and Alesa Rio Tinto has relied on its direct suppliers to provide information on the origin of the 3TGs contained in components and materials supplied, including sources of 3TGs that are supplied from lower tier suppliers. This was done with the combination of the CMRT forms as well as any additional documentation that was requested of suppliers. In conducting its due diligence, Rio Tinto has implemented the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas (“OECD Framework”). The OECD Framework has a five-step matrix for risk-based due diligence in the mineral supply chain, which requires:

1. Establishing strong company management systems

Rio Tinto supports and respects human rights consistent with the United Nations Universal Declaration of Human Rights and actively seeks to ensure the Group is not complicit in human rights abuses. The way we work, Rio Tinto’s global code of business conduct, supported by the Group’s Human Rights policy, provides the framework for the approach to business integrity, human rights and to avoid financing or supporting conflict either directly or through our supply chain.

Rio Tinto has assigned resources to the conflict minerals compliance program. The team structure is made up of a steering committee (governance team) and a conflict minerals working group (technical compliance). Rio Tinto has in place existing Enterprise Resource Planning systems designed to identify upstream actors in the supply chain. Suppliers were required to comply with The way we work. Rio Tinto offers various grievance mechanisms across the business including a help line through issues and inappropriate behaviour may be raised.

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2. Identifying and assessing risk in the supply chain Rio Tinto contracted with 3PSP to identify risks within ECL and Alesa’s supply chain and 3PSP has conducted a RCOI and due diligence on those suppliers. A focus was placed on those ECL and Alesa suppliers that were deemed to be a higher risk (“relevant suppliers”). The process utilized by 3PSP involved the following steps: i) All relevant suppliers were contacted and asked to fill out a CMRT form. ii) All CMRT forms were checked and if incorrectly filled out the supplier was contacted again by 3PSP to verify CMRT content. iii) Completed CMRT forms are assessed and an assessment of risk in the supply chain was

conducted.

3. Designing and implementing a strategy to respond to identified risks Processes were in place to communicate supply chain risk assessments to senior management.

4. Carrying out independent third-party audit of supply chain due diligence

ECL and Alesa did not, typically, have a direct relationship with 3TG smelters and refiners. As a result, ECL and Alesa did not perform direct audits of the smelters/refiners in their supply chain. Rio Tinto and 3PSP compared the facilities listed in the supplier responses to the list of smelters maintained by the Conflict-Free Sourcing Initiative (“CFSI”), the United States Department of Commerce and the LBMA and, if a supplier indicated that the facility was certified as “Conflict-Free,” confirmed that the name was listed by CFSI.

5. Reporting on supply chain due diligence Rio Tinto will meet the reporting requirements of the Dodd-Frank Act and display information regarding its conflict minerals program on its publically available website as described in the Form SD.

ECL and Alesa Product Description The following data is only applicable up until the respective dates of divestment of ECL and Alesa. The majority of the responses received provided data at a company or divisional level and did not always specify the smelters or refiners used for materials supplied to ECL and Alesa. We have disclosed validated smelters or refiners provided to ECL and Alesa in their supply chain. We cannot definitively determine whether any of the 3TGs reported by the suppliers were contained in materials supplied to ECL or Alesa or to validate that any of these smelters or refiners were actually in their supply chain. As a result, Rio Tinto was unable to identify all smelters and refiners or all the countries of origin of the 3TGs that were contained in our products. The table below lists the validated smelters or refiners in the ECL and Alesa supply chain, which, to the extent known, process 3TGs. If known, we have listed their Conflict Free status according to the CFSI and also the source of their raw materials.

Metal   Standard Smelter or Refiner Name   Conflict Free 

Gold  Advanced Chemical Company  Unknown 

Gold  Aida Chemical Industries Co., Ltd.  Yes 

Gold  Aktyubinsk Copper Company TOO  Unknown 

Gold  Allgemeine Gold‐und Silberscheideanstalt A.G.  Yes 

Gold  Almalyk Mining and Metallurgical Complex (AMMC)  Unknown 

Gold  AngloGold Ashanti Córrego do Sítio Mineração  Yes 

Gold  Argor‐Heraeus SA  Yes 

Gold  Asahi Pretec Corporation  Yes 

Gold  Asahi Refining Canada Limited  Yes 

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Gold  Asahi Refining USA Inc.  Yes 

Gold  Asaka Riken Co., Ltd.  Yes 

Gold  Atasay Kuyumculuk Sanayi Ve Ticaret A.S.  Yes 

Gold  Aurubis AG  Yes 

Gold  Bangko Sentral ng Pilipinas (Central Bank of the Philippines)  Yes 

Gold  Bauer Walser AG  Unknown 

Gold  Boliden AB  Yes 

Gold  C. Hafner GmbH + Co. KG  Yes 

Gold  Caridad  Unknown 

Gold  CCR Refinery ‐ Glencore Canada Corporation  Yes 

Gold  Cendres + Métaux SA  Unknown 

Gold  Chimet S.p.A.  Yes 

Gold  China National Gold Group Corporation  Unknown 

Gold  Chugai Mining  Unknown 

Gold  Colt Refining  Unknown 

Gold  Daejin Indus Co., Ltd.  Unknown 

Gold  Daye Non‐Ferrous Metals Mining Ltd.  Unknown 

Gold  Do Sung Corporation  Unknown 

Gold  DODUCO GmbH  Yes 

Gold  Dowa  Yes 

Gold  Eco‐System Recycling Co., Ltd.  Yes 

Gold  Elemetal Refining, LLC  Yes 

Gold  Faggi Enrico S.p.A.  Unknown 

Gold  Fidelity Printers and Refiners Ltd.  Unknown 

Gold  Gansu Seemine Material Hi‐Tech Co., Ltd.  Unknown 

Gold  Geib Refining Corporation  Unknown 

Gold  Great Wall Precious Metals Co., Ltd. of CBPM  Unknown 

Gold  Guangdong Jinding Gold Limited  Unknown 

Gold  Guoda Safina High‐Tech Environmental Refinery Co., Ltd.  Unknown 

Gold  Hangzhou Fuchunjiang Smelting Co., Ltd.  Unknown 

Gold  Heimerle + Meule GmbH  Yes 

Gold  Heraeus Ltd. Hong Kong  Yes 

Gold  Heraeus Precious Metals GmbH & Co. KG  Yes 

Gold  Hunan Chenzhou Mining Co., Ltd.  Unknown 

Gold  Hwasung CJ Co., Ltd.  Unknown 

Gold  Inner Mongolia Qiankun Gold and Silver Refinery Share Company Limited 

Unknown 

Gold  Ishifuku Metal Industry Co., Ltd.  Yes 

Gold  Istanbul Gold Refinery  Yes 

Gold  Japan Mint  Yes 

Gold  Jiangxi Copper Company Limited  Yes 

Gold  JSC Ekaterinburg Non‐Ferrous Metal Processing Plant  Yes 

Gold  JSC Uralelectromed  Yes 

Gold  JX Nippon Mining & Metals Co., Ltd.  Yes 

Gold  Kazakhmys Smelting LLC  Unknown 

Gold  Kazzinc  Yes 

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Gold  Kennecott Utah Copper LLC  Yes 

Gold  KGHM Polska Miedź Spółka Akcyjna  Unknown 

Gold  Kojima Chemicals Co., Ltd.  Yes 

Gold  Korea Metal Co., Ltd.  Unknown 

Gold  Kyrgyzaltyn JSC  Unknown 

Gold  L' azurde Company For Jewelry  Yes 

Gold  Lingbao Gold Company Limited  Unknown 

Gold  Lingbao Jinyuan Tonghui Refinery Co., Ltd.  Unknown 

Gold  LS‐NIKKO Copper Inc.  Yes 

Gold  Luoyang Zijin Yinhui Gold Refinery Co., Ltd.  Unknown 

Gold  Materion  Yes 

Gold  Matsuda Sangyo Co., Ltd.  Yes 

Gold  Metalor Technologies (Hong Kong) Ltd.  Yes 

Gold  Metalor Technologies (Singapore) Pte., Ltd.  Yes 

Gold  Metalor Technologies (Suzhou) Ltd.  Unknown 

Gold  Metalor Technologies SA  Yes 

Gold  Metalor USA Refining Corporation  Yes 

Gold  METALÚRGICA MET‐MEX PEÑOLES, S.A. DE C.V  Yes 

Gold  Mitsubishi Materials Corporation  Yes 

Gold  Mitsui Mining and Smelting Co., Ltd.  Yes 

Gold  MMTC‐PAMP India Pvt., Ltd.  Yes 

Gold  Morris and Watson  Unknown 

Gold  Moscow Special Alloys Processing Plant  Yes 

Gold  Nadir Metal Rafineri San. Ve Tic. A.Ş.  Yes 

Gold  Navoi Mining and Metallurgical Combinat  Unknown 

Gold  Nihon Material Co., Ltd.  Yes 

Gold  Ohura Precious Metal Industry Co., Ltd.  Yes 

Gold  OJSC "The Gulidov Krasnoyarsk Non‐Ferrous Metals Plant" (OJSC Krastsvetmet) 

Yes 

Gold  OJSC Kolyma Refinery  Unknown 

Gold  OJSC Novosibirsk Refinery  Unknown 

Gold  PAMP SA  Yes 

Gold  Penglai Penggang Gold Industry Co., Ltd.  Unknown 

Gold  Prioksky Plant of Non‐Ferrous Metals  Yes 

Gold  PT Aneka Tambang (Persero) Tbk  Yes 

Gold  PX Précinox SA  Yes 

Gold  Rand Refinery (Pty) Ltd.  Yes 

Gold  Republic Metals Corporation  Yes 

Gold  Royal Canadian Mint  Yes 

Gold  Sabin Metal Corp.  Unknown 

Gold  Samduck Precious Metals  Unknown 

Gold  SAMWON Metals Corp.  Unknown 

Gold  SAXONIA Edelmetalle GmbH  Unknown 

Gold  Schone Edelmetaal B.V.  Yes 

Gold  SEMPSA Joyería Platería SA  Yes 

Gold  Shandong Tiancheng Biological Gold Industrial Co., Ltd.  Unknown 

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Gold  Shandong Zhaojin Gold & Silver Refinery Co., Ltd.  Yes 

Gold  Sichuan Tianze Precious Metals Co., Ltd.  Yes 

Gold  Singway Technology Co., Ltd.  Yes 

Gold  So Accurate Group, Inc.  Unknown 

Gold  SOE Shyolkovsky Factory of Secondary Precious Metals  Unknown 

Gold  Solar Applied Materials Technology Corp.  Yes 

Gold  Sumitomo Metal Mining Co., Ltd.  Yes 

Gold  Tanaka Kikinzoku Kogyo K.K.  Yes 

Gold  The Refinery of Shandong Gold Mining Co., Ltd.  Yes 

Gold  Tokuriki Honten Co., Ltd.  Yes 

Gold  Tongling Nonferrous Metals Group Co., Ltd.  Unknown 

Gold  Torecom  Unknown 

Gold  Umicore Brasil Ltda.  Yes 

Gold  Umicore Precious Metals Thailand  Yes 

Gold  Umicore SA Business Unit Precious Metals Refining  Yes 

Gold  United Precious Metal Refining, Inc.  Yes 

Gold  Valcambi SA  Yes 

Gold  Western Australian Mint trading as The Perth Mint  Yes 

Gold  WIELAND Edelmetalle GmbH  Unknown 

Gold  Yamamoto Precious Metal Co., Ltd.  Yes 

Gold  Yokohama Metal Co., Ltd.  Unknown 

Gold  Yunnan Copper Industry Co., Ltd.  Unknown 

Gold  Zhongyuan Gold Smelter of Zhongjin Gold Corporation  Yes 

Gold  Zijin Mining Group Co., Ltd. Gold Refinery  Yes 

Tantalum  Changsha South Tantalum Niobium Co., Ltd.  Yes 

Tantalum  Conghua Tantalum and Niobium Smeltry  Yes 

Tantalum  D Block Metals, LLC  Yes 

Tantalum  Duoluoshan  Yes 

Tantalum  Exotech Inc.  Yes 

Tantalum  F&X Electro‐Materials Ltd.  Yes 

Tantalum  FIR Metals & Resource Ltd.  Yes 

Tantalum  Global Advanced Metals Aizu  Yes 

Tantalum  Global Advanced Metals Boyertown  Yes 

Tantalum  Guangdong Zhiyuan New Material Co., Ltd.  Yes 

Tantalum  Guizhou Zhenhua Xinyun Technology Ltd., Kaili branch  Yes 

Tantalum  H.C. Starck GmbH Goslar  Yes 

Tantalum  H.C. Starck GmbH Laufenburg  Yes 

Tantalum  H.C. Starck Hermsdorf GmbH  Yes 

Tantalum  H.C. Starck Inc.  Yes 

Tantalum  H.C. Starck Ltd.  Yes 

Tantalum  H.C. Starck Smelting GmbH & Co.KG  Yes 

Tantalum  Hengyang King Xing Lifeng New Materials Co., Ltd.  Yes 

Tantalum  Hi‐Temp Specialty Metals, Inc.  Yes 

Tantalum  Jiangxi Dinghai Tantalum & Niobium Co., Ltd.  Yes 

Tantalum  JiuJiang JinXin Nonferrous Metals Co., Ltd.  Yes 

Tantalum  Jiujiang Tanbre Co., Ltd.  Yes 

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Tantalum  Jiujiang Zhongao Tantalum & Niobium Co., Ltd.  Yes 

Tantalum  KEMET Blue Metals  Yes 

Tantalum  KEMET Blue Powder  Yes 

Tantalum  King‐Tan Tantalum Industry Ltd.  Yes 

Tantalum  LSM Brasil S.A.  Yes 

Tantalum  Metallurgical Products India Pvt., Ltd.  Yes 

Tantalum  Mineração Taboca S.A.  Yes 

Tantalum  Mitsui Mining & Smelting  Yes 

Tantalum  Molycorp Silmet A.S.  Yes 

Tantalum  Ningxia Orient Tantalum Industry Co., Ltd.  Yes 

Tantalum  Plansee SE Liezen  Yes 

Tantalum  Plansee SE Reutte  Yes 

Tantalum  QuantumClean  Yes 

Tantalum  RFH Tantalum Smeltry Co., Ltd.  Yes 

Tantalum  Shanghai Jiangxi Metals Co. Ltd  Unknown 

Tantalum  Solikamsk Magnesium Works OAO  Yes 

Tantalum  Taki Chemicals  Yes 

Tantalum  Telex Metals  Yes 

Tantalum  Ulba Metallurgical Plant JSC  Yes 

Tantalum  XinXing HaoRong Electronic Material Co., Ltd.  Yes 

Tantalum  Yichun Jin Yang Rare Metal Co., Ltd.  Yes 

Tantalum  Zhuzhou Cemented Carbide  Yes 

Tin  Alpha  Yes 

Tin  An Vinh Joint Stock Mineral Processing Company  Unknown 

Tin  Chenzhou Yun Xiang mining limited liability company  Unknown 

Tin  China Tin Group Co., Ltd.  Unknown 

Tin  CNMC (Guangxi) PGMA Co., Ltd.  Unknown 

Tin  Cooperativa Metalurgica de Rondônia Ltda.  Yes 

Tin  CV Ayi Jaya  Yes 

Tin  CV Gita Pesona  Yes 

Tin  CV Makmur Jaya  Unknown 

Tin  CV Serumpun Sebalai  Yes 

Tin  CV United Smelting  Yes 

Tin  CV Venus Inti Perkasa  Unknown 

Tin  Dowa  Yes 

Tin  Electro‐Mechanical Facility of the Cao Bang Minerals & Metallurgy Joint Stock Company 

Unknown 

Tin  Elmet S.L.U. (Metallo Group)  Yes 

Tin  EM Vinto  Yes 

Tin  Estanho de Rondônia S.A.  Unknown 

Tin  Feinhütte Halsbrücke GmbH  Unknown 

Tin  Fenix Metals  Yes 

Tin  Gejiu Kai Meng Industry and Trade LLC  Unknown 

Tin  Gejiu Non‐Ferrous Metal Processing Co., Ltd.  Yes 

Tin  Gejiu Yunxin Nonferrous Electrolysis Co., Ltd.  Unknown 

Tin  Gejiu Zili Mining And Metallurgy Co., Ltd.  Unknown 

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Tin  Huichang Jinshunda Tin Co., Ltd.  Unknown 

Tin  Jiangxi Ketai Advanced Material Co., Ltd.  Yes 

Tin  Jiangxi Nanshan  Unknown 

Tin  Linwu Xianggui Ore Smelting Co., Ltd.  Unknown 

Tin  Magnu's Minerais Metais e Ligas Ltda.  Yes 

Tin  Malaysia Smelting Corporation (MSC)  Yes 

Tin  Melt Metais e Ligas S/A  Yes 

Tin  Metahub Industries Sdn. Bhd.  Unknown 

Tin  Metallic Resources, Inc.  Yes 

Tin  Metallo Chimique  Unknown 

Tin  Metallo‐Chimique N.V.  Yes 

Tin  Mineração Taboca S.A.  Yes 

Tin  Minsur  Yes 

Tin  Mitsubishi Materials Corporation  Yes 

Tin  Nankang Nanshan Tin Manufactory Co., Ltd.  Unknown 

Tin  Nghe Tinh Non‐Ferrous Metals Joint Stock Company  Unknown 

Tin  Novosibirsk Integrated Tin Works  Unknown 

Tin  O.M. Manufacturing (Thailand) Co., Ltd.  Yes 

Tin  O.M. Manufacturing Philippines, Inc.  Unknown 

Tin  Operaciones Metalurgical S.A.  Yes 

Tin  Phoenix Metal Ltd.  Unknown 

Tin  PT Alam Lestari Kencana  Unknown 

Tin  PT Aries Kencana Sejahtera  Yes 

Tin  PT Artha Cipta Langgeng  Yes 

Tin  PT ATD Makmur Mandiri Jaya  Yes 

Tin  PT Babel Inti Perkasa  Yes 

Tin  PT Babel Surya Alam Lestari  Unknown 

Tin  PT Bangka Kudai Tin  Unknown 

Tin  PT Bangka Prima Tin  Yes 

Tin  PT Bangka Putra Karya  Unknown 

Tin  PT Bangka Timah Utama Sejahtera  Unknown 

Tin  PT Bangka Tin Industry  Yes 

Tin  PT Belitung Industri Sejahtera  Yes 

Tin  PT BilliTin Makmur Lestari  Yes 

Tin  PT Bukit Timah  Yes 

Tin  PT Cipta Persada Mulia  Yes 

Tin  PT DS Jaya Abadi  Yes 

Tin  PT Eunindo Usaha Mandiri  Yes 

Tin  PT Fang Di MulTindo  Unknown 

Tin  PT HP Metals Indonesia  Unknown 

Tin  PT Inti Stania Prima  Yes 

Tin  PT Justindo  Yes 

Tin  PT Karimun Mining  Unknown 

Tin  PT Koba Tin  Unknown 

Tin  PT Mitra Stania Prima  Yes 

Tin  PT Panca Mega Persada  Yes 

12

Tin  PT Pelat Timah Nusantara Tbk  Unknown 

Tin  PT Prima Timah Utama  Yes 

Tin  PT Refined Bangka Tin  Yes 

Tin  PT Sariwiguna Binasentosa  Yes 

Tin  PT Seirama Tin Investment  Unknown 

Tin  PT Stanindo Inti Perkasa  Yes 

Tin  PT Sumber Jaya Indah  Yes 

Tin  PT Supra Sukses Trinusa  Unknown 

Tin  PT Timah (Persero) Tbk Kundur  Yes 

Tin  PT Timah (Persero) Tbk Mentok  Yes 

Tin  PT Tinindo Inter Nusa  Yes 

Tin  PT Tirus Putra Mandiri  Unknown 

Tin  PT Tommy Utama  Unknown 

Tin  PT Wahana Perkit Jaya  Yes 

Tin  PT Yinchendo Mining Industry  Unknown 

Tin  Resind Indústria e Comércio Ltda.  Yes 

Tin  Rui Da Hung  Unknown 

Tin  Soft Metais Ltda.  Yes 

Tin  Thaisarco  Yes 

Tin  Tuyen Quang Non‐Ferrous Metals Joint Stock Company  Unknown 

Tin  VQB Mineral and Trading Group JSC  Yes 

Tin  White Solder Metalurgia e Mineração Ltda.  Yes 

Tin  Yunnan Chengfeng Non‐ferrous Metals Co., Ltd.  Unknown 

Tin  Yunnan Tin Group (Holding) Company Limited  Unknown 

Tungsten  A.L.M.T. TUNGSTEN Corp.  Yes 

Tungsten  Asia Tungsten Products Vietnam Ltd.  Yes 

Tungsten  Chenzhou Diamond Tungsten Products Co., Ltd.  Yes 

Tungsten  Chongyi Zhangyuan Tungsten Co., Ltd.  Yes 

Tungsten  Dayu Jincheng Tungsten Industry Co., Ltd.  Unknown 

Tungsten  Dayu Weiliang Tungsten Co., Ltd.  Unknown 

Tungsten  Fujian Jinxin Tungsten Co., Ltd.  Yes 

Tungsten  Ganxian Shirui New Material Co., Ltd.  Unknown 

Tungsten  Ganzhou Huaxing Tungsten Products Co., Ltd.  Yes 

Tungsten  Ganzhou Jiangwu Ferrotungsten Co., Ltd.  Yes 

Tungsten  Ganzhou Non‐ferrous Metals Smelting Co., Ltd.  Unknown 

Tungsten  Ganzhou Seadragon W & Mo Co., Ltd.  Yes 

Tungsten  Ganzhou Yatai Tungsten Co., Ltd.  Yes 

Tungsten  Global Tungsten & Powders Corp.  Yes 

Tungsten  Guangdong Xianglu Tungsten Co., Ltd.  Yes 

Tungsten  H.C. Starck GmbH  Unknown 

Tungsten  Hunan Chenzhou Mining Co., Ltd.  Yes 

Tungsten  Hunan Chuangda Vanadium Tungsten Co., Ltd. Wuji  Unknown 

Tungsten  Hunan Chuangda Vanadium Tungsten Co., Ltd. Yanglin  Unknown 

Tungsten  Hunan Chunchang Nonferrous Metals Co., Ltd.  Yes 

Tungsten  Hydrometallurg, JSC  Yes 

Tungsten  Japan New Metals Co., Ltd.  Yes 

13

Tungsten  Jiangxi Gan Bei Tungsten Co., Ltd.  Yes 

Tungsten  Jiangxi Minmetals Gao'an Non‐ferrous Metals Co., Ltd.  Unknown 

Tungsten  Jiangxi Tonggu Non‐ferrous Metallurgical & Chemical Co., Ltd.  Unknown 

Tungsten  Jiangxi Xinsheng Tungsten Industry Co., Ltd.  Unknown 

Tungsten  Jiangxi Yaosheng Tungsten Co., Ltd.  Unknown 

Tungsten  Kennametal Fallon  Unknown 

Tungsten  Kennametal Huntsville  Yes 

Tungsten  Malipo Haiyu Tungsten Co., Ltd.  Yes 

Tungsten  Niagara Refining LLC  Yes 

Tungsten  Nui Phao H.C. Starck Tungsten Chemicals Manufacturing LLC  Yes 

Tungsten  Pobedit, JSC  Unknown 

Tungsten  Sanher Tungsten Vietnam Co., Ltd.  Unknown 

Tungsten  Tejing (Vietnam) Tungsten Co., Ltd.  Yes 

Tungsten  Vietnam Youngsun Tungsten Industry Co., Ltd.  Yes 

Tungsten  Wolfram Bergbau und Hütten AG  Yes 

Tungsten  Wolfram Company CJSC  Unknown 

Tungsten  Xiamen Tungsten (H.C.) Co., Ltd.  Yes 

Tungsten  Xiamen Tungsten Co., Ltd.  Yes 

Tungsten  Xinhai Rendan Shaoguan Tungsten Co., Ltd.  Yes 

14

Below is a general description of ECL and Alesa’s products and the manufacturing facilities until divestment. This is the last filing by Rio Tinto in connection with ECL and Alesa. ECL ECL’s business model included direct manufacturing of equipment that may have used component parts acquired from other suppliers. ECL’s network of four subsidiaries is based in Ronchin, France, with operations in Quebec City; Matola, Mozambique; Richards Bay, South Africa; Brisbane (Eagle Farm), Portland, and Newcastle, Australia; and Dubai, United Arab Emirates.

ECL designed, manufactured and installed high quality equipment in smelters for the aluminium industry, as well as delivered solutions to assist its customers at every step of the project and at every milestone in the equipment’s life cycle. ECL produced a range of products including:

metal and bath handling equipment, or casthouse purpose made cranes (e.g., a variety of cranes for metal ladle skimming, stripping, and plate handling)

diverse types of machines for pot tending, anode changing, overhead tapping, anode jacking, and stud pulling, among others

equipment for the carbon sector (furnace tending, rodding shops, anode handling and storage)

Alesa Alesa was based in Zurich, Switzerland, with facilities in Montreal, Canada and Gardanne, France. Alesa’s expertise included materials handling, as well as automation. Alesa’s client projects represent a broad variety of industries. Alesa`s services and products ranged from feasibility studies, design, engineering, fabrication and installation to start-up assistance, training and customer service. Alesa’s business model for equipment fabrication typically involved contracting out the manufacturing and production of the equipment, having a supplier make particular product components, purchasing equipment or parts to be incorporated into a final product. Examples of equipment included:

Materials handling solutions; carbon plant technology and automation Harbour facilities (ship loading/unloading systems) Conveying systems (pneumatic and mechanical) Storage equipment (fill/reclaim) Vehicle loading and unloading Pot control systems Automatic fire control systems Anode handling equipment