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Annual Report and Accounts 2011

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Our Assets: at a Glance

Petra has a well-diversified portfolio, with controlling interests in eight producing mines: seven in South Africa and one in Tanzania


Focus on Africa – source of ~60% of the world's gem diamonds by value

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Petra ownership

Helam: 74% Petra, 26% BEE partner Sedibeng Mining (Pty) Ltd

Sedibeng: 74.5% Petra, 17.85% BEE partner Sedibeng Mining (Pty) Ltd, 7.65% BEE partner Bokone Properties (Pty) Ltd

Star: 74% Petra, 26% BEE partner Sedibeng Mining (Pty) Ltd

Portfolio of three fissure mines: Helam, Sedibeng and Star

Narrow vein, low tonnage "fissure" mines

Key facts:

  • Fissures are the narrow root zones of kimberlites (after the main pipe has been eroded away)
  • Low tonnage operations but high grade
  • Expansion plan to increase production from ca. 87,000 ctpa to ca.140,000 ctpa by FY 2015
  • Resource base of 5.0 Mcts
  • >11 year initial mine plan

 

Petra ownership

75%

25% United Government of the Republic of Tanzania

Petra's only open pit operation

At 146 hectares, Williamson is the largest kimberlite pipe ever to be mined economically on a continuous basis, having been operated for over 70 years

Key facts:

  • Renowned for high value white and "bubblegum" pink diamonds
  • Major resource base of 40.1 Mcts
  • 3 Mtpa plant to come into production in Q3 FY 2012
  • 17 year initial mine plan

 

 

Petra ownership

74%

26% BEE partners (14% Thembinkosi Mining Investments (Pty) Ltd, 12% Petra Diamonds Employee Share Trust)

The world's most celebrated diamond mine

Cullinan earned its place in history as the source of the Cullinan diamond in 1905, the largest gem diamond ever at 3,106 carats rough

Key facts:

  • Renowned for large, top quality gem diamonds – has produced 745 diamonds of +100 carats and a quarter of all diamonds of +400 carats
  • Only reliable source of highly prized, rare blue diamonds
  • World-class resource base of 203.7 Mcts (including tailings)
  • Expansion plan to increase production from ca. 895,000 ctpa to 2.4 Mctpa by FY 2019 (underground and tailings)
  • 16 year initial mine plan

 

Petra ownership

74%

26% BEE partners (21% Senakha Diamonds Investments (Pty) Ltd, 5% Petra Diamonds Employee Share Trust)

South Africa's second largest diamond mine

A major producer with world-class infrastructure and modern plant

Key facts:

  • Major resource base of 43.7 Mcts, incl. 25.8 Mcts in reserves
  • Known to produce large, special diamonds – produced ca. 27 stones of +45 carats pa over last four years
  • Expansion plan to increase production from ~1.5 Mctpa to just under 2 Mctpa by FY 2018 (underground and tailings)
  • 18 year initial mine plan

 

Petra ownership

74%

26% BEE partner Sedibeng Mining (Pty) Ltd

Kimberley is the heart of South Africa's diamond industry

Operation comprises three mines: Bultfontein, Dutoitspan and Wesselton

Key facts:

  • Historic source of large diamonds and fancy yellows
  • Resource base of 7.1 Mcts
  • Expansion plan to increase production from ca. 57,000 ctpa to ca. 150,000 ctpa by FY 2013
  • 11 year initial mine plan

 

Petra ownership

74%

26% BEE partner Re-Teng Diamonds (Pty) Ltd

One of the world's top kimberlite mines by average diamond value

Exceptional infrastructure and underground operation

Key facts:

  • Regularly produces exceptional white diamonds of between five and 30 carats in size
  • Resource base of 6.1 Mcts
  • Expansion plan to increase production from ca. 48,000 ctpa to +100,000 ctpa by FY 2017 (underground and tailings)
  • 14 year initial mine plan

Employees (excluding contractors) (as at 30 October 2011)