Mesa J mine

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Mesa J mine
Mesa J mine is located in Australia
Mesa J mine
Mesa J mine
Location in Australia
Location Pilbara
State Western Australia
Country Australia
Coordinates 21°45′00″S 116°14′32″E / 21.750059°S 116.242203°E / -21.750059; 116.242203Coordinates: 21°45′00″S 116°14′32″E / 21.750059°S 116.242203°E / -21.750059; 116.242203
Products Iron ore
Production 7 million tonnes/annum
Opened 1994
Company Rio Tinto Iron Ore (53%)
Mitsui & Co. (33%)
Nippon Steel (10.5%)
Sumitomo Metal Industries (3.5%)
Website Rio Tinto Iron Ore website
Year of acquisition Rio Tinto: 2000

The Mesa J mine is an iron ore mine located in the Pilbara region of Western Australia, 16 kilometres south-west of Pannawonica.[1]

The mine is owned by Robe River Iron Associates (53% Rio Tinto) and operated by Rio Tinto Iron Ore and is one of twelve iron ore mines the company operates in the Pilbara.[2][3] In the calendar year 2009, the combined Pilbara operations produced 202 million tonnes of iron ore, a 15 percent increase from 2008.[4] The Pilbara operations accounted for almost 13 percent of the world's 2009 iron ore production of 1.59 billion tonnes.[5][6]

The Hamersley Range, where the mine is located, contains 80 percent of all identified iron ore reserves in Australia and is one of the world's major iron ore provinces.[7]


Iron ore mines in the Pilbara region.

Rio Tinto's iron ore operations in the Pilbara began in 1966.[2] The mine itself began operations in 1994. The mine has an annual production capacity of 7 million tonnes of iron ore, sourced from open-pit operations. The ore is processed on site before being loaded onto rail.[8] At the height of production, the mine produced 35 million tonnes of iron ore annually.[9]

Ore from the mine is then transported to the coast through the Hamersley & Robe River railway, where it is loaded onto ships.[10] Ore from Mesa J, like from the West Angelas, is taken to Cape Lambert by rail to be exported as fines. The fines have a maximum size of 9.5 mm.[11]

The mine's workforce is on a fly-in fly-out roster.[8]

The mine is located near the Mesa A mine.[2] The new Mesa A mine is scheduled to replace the Mesa J mine which is nearing the end of its life span. The combined investment of Rio Tinto in the new Mesa A and Brockman 4 mines is A$2.4 billion.[12]

Robe River Iron Associates[edit]

Robe River Iron, owner of the mine, is jointly owned by the following companies:[1]

Robe River Iron operates the West Angelas, Mesa A and Mesa J mines.[12] Rio Tinto acquired its share of 53% in late 2000, when it took over mining company North Limitd.[13]


  1. ^ a b MINEDEX website: Deepdale Mesa J search result accessed: 6 November 2010
  2. ^ a b c Pilbara Rio Tinto Iron Ore website, accessed: 6 November 2010
  3. ^ Mining Rio Tinto Iron Ore website, accessed: 6 November 2010
  4. ^ Preparing for the future Rio Tinto presentation, published: 23 March 2010, accessed: 7 November 2010
  5. ^ Global iron-ore production falls 6,2% in 2009 - Unctad report, published: 30 July 2010, accessed: 7 November 2010
  6. ^ Production of iron ore fell in 2009, but shipments continued to increase, report says UNCTAD website, published: 30 July 2010, accessed: 7 November 2010
  7. ^ Iron fact sheet - Australian Resources and Deposits Geoscience Australia website, accessed: 7 November 2010
  8. ^ a b Mesa J mine Rio Tinto Iron Ore website, accessed: 6 November 2010
  9. ^ Rio's Pilbara railway extension begins operating, published: 22 February 2010, accessed: 8 November 2010
  10. ^ Rail Rio Tinto Iron Ore website, accessed: 6 November 2010
  11. ^ Iron fact sheet - Mining Geoscience Australia website, accessed: 7 November 2010
  12. ^ a b Western Australian Mineral and Petroleum Statistic Digest 2008-09 Department of Mines and Petroleum website, accessed: 8 November 2010
  13. ^ The Australian Mines Handbook - 2003-04 edition, editor: Ross Louthean, publisher: Louthean Media Pty Ltd, page: 243

External links[edit]