Alcoa Kwinana – 50 Years of Operation Tim Maclean – Refinery Manager 1 4 November 2013

Alcoa Inc 2 Alcoa is the world’s leading producer aluminium and aluminium products as well as the world’s largest bauxite miner  61,000 employees worldwide  31 countries Alcoa contributes around $5 billion per year to the Australian economy Alcoa produces 45% of Australia’s alumina and 25% of Australia’s aluminium. Our alumina production in Western Australia accounts for 10% of total world demand

Alcoa – Western Australian Refineries 3 Alcoa operates a three-refinery system in WA – Kwinana, Pinjarra and Wagerup - between the capital city, Perth, and the port of Bunbury, 200 km to the south. Kwinana was Alcoa’s first Australian refinery - commissioned in 1963 World’s first alumina refinery to receive ISO:14001 accreditation Employs around 950 people – 54% live locally Produces both smelter grade and non-metallurgic (chemical) alumina Technology Delivery Group (TDG) – Alcoa’s global refining research and development team

Kwinana Refinery 4 Around 1.9 million tonnes of alumina are produced at the refinery each year

Kwinana Refinery and Residue Areas 5

Kwinana Refinery’s History – Key Milestones 6 July 1961Alcoa is granted its bauxite lease by Western Australian Government Dec 1961Construction began at the Kwinana Alumina Refinery July 1963Official opening of the Kwinana Alumina Refinery 18 July 1963The first train carrying bauxite from Jarrahdale mine arrived at Kwinana refinery. Feb 1964Kwinana began to load the MV Lake Sorrel with the first batches of alumina. 1973The original one-unit expanded to a six-unit operation. 1980sAs well as making smelter grade alumina, Kwinana began to manufacture hydrated alumina Kwinana’s 50th Anniversary Alcoa Kwinana reached a production milestone of 75 million tonnes

The Bayer Process DIGESTION HYDRATE CALCINATION HYDRATE PRECIPITATION CLARIFICATION BAUXITE ALUMINA RESIDUE

Celebrating 50 Years of Operation 8

Successes: Alcoa and our Stakeholders The successful operation of the Refinery is not possible without input from key stakeholders. Kwinana Refinery works closely with:  Community and Neighbours  Government and Regulators  Alcoa employees Alcoa is committed to the local community and acknowledges that feedback, ideas and initiatives from the community help us as an organisation to continuously improve the way we do things. EIP / LTRMS Community Consultation Sessions 9

Successes: Community Partnerships Over $190,000 has been invested in local community projects and activities in 2012 and 2013 (to date) through our Community Partnership Program. Our 2013 Community Partnerships  Alcoa Children’s Party (City of Kwinana)  Alcoa Swim School (City of Kwinana)  Lyrik (City of Kwinana)  Castaways Sculpture Awards (City of Rockingham)  Rockingham City Community Garden (Rockingham City Community Garden Group)  Alcoa Cockburn Community Development Fund (City of Cockburn)  Challenger Beach Rehabilitation Project (Coastcare)  Alcoa Kwinana Retirees Club  Learning for Life Kwinana (The Smith Family)  Bertram Outdoor Classroom (Bertram Primary School)  Have a Go Day 2013 (Seniors Recreation Council of WA)  Charity Golf Day (Cystic Fibrosis WA) 10

Future Challenges Challenging economic conditions  Low LME Aluminium price  $AUD strength Attracting right mix of employees 11

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