Jadar ProjectFact Sheet

March 2017www.riotinto.com/Jadar

Rio Tinto Jadar Project

The Jadar Project is a world-class lithium-borate deposit discovered by Rio TintoDiscovered in 2004, Jadar is a unique deposit near the town of Loznica, Serbia. It contains Jadarite - a new lithium sodium borosilicate mineral. Jadar is the only place in the world where this mineral can be found. Incidentally, Jadarite has a similar chemical composition of the fictional kryptonite of Superman fame.

When developed, production could commence by 2023Due to its high lithium and boron concentrations, Jadar has been ranked as one of the largest lithium deposits in the world. When developed, the deposit has the potential to supply a significant amount of the global demand for lithium and boric acid.

Rio Tinto’s sustainable development approach generates value for all stakeholdersRio Tinto’s strategy to invest in long-life, low-cost, expandable operations means that we operate on extended time horizons. These long-term commitments provide opportunities to plan, implement and deliver sustainable contributions to social wellbeing, environmental stewardship and economic prosperity everywhere we operate.

Rio Tinto has spent more than US$90 million on the project to dateSignificant investment is required to continue technical analysis and planning to move from prefeasibility to feasibility, then to construction and operation.

Prefeasibility requires completing technical, environmental and socioeconomic studiesDuring prefeasibility, Serbian and international experts in different disciplines (from mining to processing to communities) continue studies to assess the technical and economic viability of the project. The work includes completing ore body knowledge studies, testing new recovery and processing methods, conducting mining trade-off studies, and collaborating with Serbian experts to conduct extensive environmental and socioeconomic analysis to lay the groundwork for efficient and responsible development.

We are committed to building long-term partnershipsThe Jadar project is committed to forming respectful, lasting, and mutually beneficial relationships with landowners and the local community, the Serbian government, and other stakeholders - now and through the life of the operation.

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

Rio Tinto Serbia HighlightsInnovating to Develop New Resources

In Q1 2017, we reached an important milestone in the de-velopment of the Jadar Project. We upgraded the resource estimation to 136 million tonnes, a 16 percent increase compared to our 2015 estimate. Increasing our confidence in the ore body and the technical aspects of the project helps Jadar remain an attractive investment in Rio Tinto’s project portfolio.

On our development journey of this lithium-borate project near Loznica, we have continued to develop a new process-ing technology for the unique mineral Jadarite. A mixed team of Serbian, American and Australian professionals have been testing a new processing test plant in Australia. As this exciting work continues, our Serbian and global Jadar project team continues to grow in order to progress other aspects of the study work.

With many geological, technical and socio-economic stud-ies underway, our work in Prefeasibility continues through the end of the year. One of our next major milestones is to obtain a certificate of resources and reserves from the Government of Serbia. This certificate will help strengthen our position for future investments in the Jadar project in Serbia.

We aim to achieve all of this while maintaining our impec-cable safety record. Our project team in Serbia recently reached five years and over 700,000 working hours without a lost time injury. We will keep our strong focus on safety as project activities progress.

Upgraded Jadar Resources

Kevork Chouzadjian, VP Project Development, Rio Tinto Borates

In this issue

• Safety First

• Update from the Field

• Working with the Community

• Innovation and Technology

• Our People

• News Briefs

Photo: Village nearby Loznica, West Serbia (M. Ristovic)

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

The Rio Tinto project team in Serbia reached five years without a lost time injury-free on 25 January 2017. In the same period, we reached more than 700,000 safe working hours. Both milestones were accomplished through strong teamwork and full compliance with both Serbian health and safety regulations and Rio Tinto standards, including Rio Tinto’s Zero Harm and Critical Risk Management (CRM) pro-grammes. Rio Tinto’s robust standards are comprehensive and focus on all stakeholders – internal and external. They establish requirements for safety and health in the work-place, to ensure we work with our communities for mutual benefit, and to protect the environment where we work.

These standards provide the foundation for all Rio Tinto businesses to manage the things that matter most to every employee and contractor working in the business. The standards also address how we manage critical risks in the workplace through our Critical Risk Management pro-gramme.

Five years safety milestone achievement

Sa fety First

The safety milestones surpassed by the Rio Tinto project team in Serbia have kept the project’s all injury frequency rate a 0.29 to date. These results were a continuation of the exemplary results over 16 years of operations in Serbia. Over this 16 year period, the team achieved over 1.300.000 working hours with only one injury. As a result, we have proudly submitted a nomination for the National Health and Safety at Work Award “Charter 28 April” granted by the Republic of Serbia to an employer with significant safety achievements. Let the best win!

Health & Safety Statistics

For more information on our safety programme, visit Rio Tinto’s website: http://www.riotinto.com/ourcommitment/our-people-21466.aspx

Photo: Rio Tinto safety gear, detail (A. Stojanovic)

Health & Safety Statistics

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

Our Jadar project in Serbia recently reached another mile-stone on the lithium-borate project’s development journey when Rio Tinto upgraded the mineral resource to 136 million tonnes.

This upgrade was based on 3D seismic work, improved un-derstanding of the lithostratigraphy (*geological discipline associated with the study of rock layers) and mineralisation, and other orebody knowledge activities. Jadar’s mineral resources have increased 16 percent from 117Mt to 136Mt, a 19Mt difference, and includes the first release of Indicated resource. This work has further strengthened our under-standing of the orebody and the project’s overall technical and economic viability. The updated mineral resources are reported in accordance with international standards and specifically the Australasian Code for Reporting of Explo-ration Results, Mineral Resources and Ore Reserves, 2012 (JORC Code) and the ASX Listing Rules.

Increase to Jadar Mineral Resources

Update from the field

HIGHLIGHTS:

Rio Tinto has upgraded Jadar Min-eral Resource to 136 million tonnes

Further strengthens our confidence in the Jadar project

Jadarite is a new mineral and source of both lithium and borates

“The Jadar project in Serbia is a world-class lithium-borate deposit, and if developed could supply a significant proportion of global demand for lithium and borates. Findings so far are encouraging and we are progressing the work required to con-firm the business case and progress the project approvals”.

Simon Trott, Managing Director, Rio Tinto Salt, Uranium and Borates

Photo: A unique Serbian mineral Jadarite (M. Ristovic)

Photos: Rio Tinto drilling rig nearby Loznica, Serbia (M. Ristovic)

More information about Jadar’s resource upgrade can be found here: http://www.riotinto.com/media/media-releases-237_21403.aspx

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

Working with the Community

The Jadar Project is in the Prefeasibility study phase, which requires the completion of technical studies, as well as envi-ronmental and socio-economic baseline and impact studies. This work to evaluate and understand the potential impact of the project on both the physical and social environment is underway. The studies are being conducted in accordance with the highest international standards and in accordance with the legal framework of the Republic of Serbia. Informa-tion gathered through the baseline and impact assessment studies will be used to make decisions about the final design of the project and how we will manage, mitigate and minimise the impact of the project.

These studies will cover a number of areas: air quality, noise and vibration, terrestrial ecology, aquatic ecology, soil and geology, surface and underground water, landscape and visual impact of the project, transport, cultural heritage and other socio-economic areas.

Progressing socio-economic and environmental baseline studies

The complex socio-economic studies will be completed using input from our stakeholders. We are seeking this input through surveys and interviews with individuals and groups on the region of Loznica and surrounding areas. We take this opportunity to thank all those who have or will participate in these extensive studies. All additional information on these and other studies are available at the Rio Tinto Information Centre in Loznica (Gimnazijska Street No. 4).

Project definition Baseline Impact assessment Impact management

Photo: Rio Tinto Information Centre in Loznica (A. Stojanovic)

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

Following the discovery of the new mineral Jadarite, a team of Rio Tinto technology engineers have been developing a new mineral processing technology in order to extract borates and lithium from the ore. For this purpose, Rio Tinto has built a special test or pilot plant facility based in Australia. This processing facility, called the Bundoora Integrated Con-tinuous Chemical Pilot Plant (BICCPP), represents a collective effort of Australian, Serbian and American professionals.

Since the last newsletter, the task of recruiting and training of operators and commissioning the small scale pilot plant has commenced under the watchful eye of James Davidson, the BICCPP Superintendent. Assembling the BICCPP has been staged to ensure that each of the key process stages is fully functioning. Commissioning is due to be completed in March, with continuous operations running through April and May and results available in June. The data generated from the BICCPP will form a number of inputs into the Prefeasibility Study and further support the development of the overall Jadar project.

Mrs. Julia Feeney, Australian Ambassador to Serbia and Mr. Miroljub Petrović, Serbian Ambassador to Australia, visited the BICCPP on 31 March 2017, where they were welcomed and hosted by the team of BICCPP engineers, Simon Trott - Managing Director for Rio Tinto Borates, Salt and Uranium, and Mr. Kevork Chouzadijan - Vice President Project Development for Rio Tinto Borates.

Pilot Plant operations update

Innovation and technology

Photo: H.E. Ambassadors visiting the BICCPP in Australia

Progressing socio-economic and environmental baseline studies

Photo: Rio Tinto Information Centre in Loznica (A. Stojanovic)

Rio Tinto Jadar Project Serbia NEWSLETTER, Issue No. 12 | Q1 2017 riotinto.com/jadar

Our team in Serbia and other locations around the world continues to grow in order to progress the Jadar project. Since the end of 2016, several specialists have joined us in the fields of construction, operational readiness, commercial and mine planning. We welcome them warmly, and appreciate the many ways they are individually and collectively contribut-ing to our work.

Jadar Team is expandingOur people

Rio Tinto Serbia recently initiated the recruitment of graduates as part of Rio Tinto’s global graduate pro-gramme. In Serbia, we are hiring graduates in three distinct business areas: environment and communities, technical and finance. Rio Tinto’s graduate programme is a structured, two-year development journey, meant to ensure we attract rising talent in the local market. This helps us build our capabilities for the future and ensure

the graduates are well-equipped and prepared to work within the global environment of Rio Tinto.

Graduate recruitment is one of the strongest employer branding statements companies can make in a local market. It sends a strong message of the belief in the local talent pool and a willingness to invest in develop-ing local talent.

Launch of the Graduate Programme in Serbia

Photo: Rio Tinto employees in Serbia (M. Ristovic)

News brief

As of 1 April 2017, Rio Tinto’s Jadar Project Team in Serbia will be based on a new location at Resavska 23 Street in the centre of Belgrade.

New telephone numbers are: + 381 11 4031 430 to 435

Email contact: Serbia@riotinto.com

New Belgrade premises