Alcoa 2013 Annual Report Download - page 21

mt of Juruti high iron bauxite as test material. Alcoa is actively exploring and evaluating additional sources of bauxite in
Suriname. During 2014, Suralco will be mining from both reserves and resources. A feasibility study relating to the
development of a mine at the Nassau Plateau is in progress.
8Alumínio holds an 8.58% total interest, AWA Brasil (formerly Abalco S.A., which merged with Alcoa World Alumina
Brasil Ltda. in December 2008) holds a 4.62% total interest and AWA LLC holds a 5% total interest in MRN. MRN is
jointly owned with affiliates of Rio Tinto Alcan Inc., Companhia Brasileira de Alumínio, Companhia Vale do Rio Doce,
BHP Billiton Plc (BHP Billiton) and Norsk Hydro. Alumínio, AWA Brasil, and AWA LLC purchase bauxite from MRN
under long-term supply contracts.
9AWA LLC owns a 45% interest in Halco (Mining), Inc. (Halco). Halco owns 100% of Boké Investment Company, a
Delaware company, which owns 51% of CBG. The Guinean Government owns 49% of CBG, which has the exclusive
right through 2038 to develop and mine bauxite in certain areas within a 10,000 square-mile concession in northwestern
Guinea.
10 AWA LLC has a bauxite purchase contract with CBG that expires in 2029. Before that expiration date, AWA LLC
expects to negotiate an extension of the contract as CBG will have concession rights until 2038. The CBG concession
can be renewed beyond 2038 by agreement of the Government of Guinea and CBG should more time be required to
commercialize the remaining economic bauxite within the concession.
11 Guinea—Boké: CBG prices bauxite and plans the mine based on the bauxite qualities of total alumina (TAl2O3) and total
silica (TSiO2).
12 Ma’aden Bauxite & Alumina Company is a joint venture owned by Saudi Arabian Mining Company (Ma’aden)
(74.9%) and AWA Saudi Limited (25.1%). AWA Saudi Limited is part of the AWAC group of companies and is owned
60% by Alcoa and 40% by Alumina Limited.
13 Kingdom of Saudi Arabia—Al Ba’itha: Bauxite reserves and mine plans are based on the bauxite qualities of total
available alumina (TAA) and total silica (TSiO2).
Qualifying statements relating to the table above:
Australia—Darling Range Mines: Huntly and Willowdale are the two active mines in the Darling Range of Western
Australia. The mineral lease issued by the State of Western Australia to Alcoa is known as ML1SA and its term
extends to 2024. The lease can be renewed for an additional twenty-one year period to 2045. The declared reserves are
as of December 31, 2013. The amount of reserves reflect the total AWAC share. Additional resources are routinely
upgraded by additional exploration and development drilling to reserve status. The Huntly and Willowdale mines
supply bauxite to three local AWAC alumina refineries.
Brazil—Poços de Caldas: Declared reserves are as of December 31, 2013. Tonnage is total Alcoa share. Additional
resources are being upgraded to reserves as needed.
Brazil—Juruti RN101, RN102, RN103, RN104, #34: Declared reserves are as of December 31, 2013. All reserves
are on Capiranga Plateau. Declared reserves are total AWAC share. Declared reserve tonnages and the annual
production tonnage are washed product tonnages. The Juruti mine’s operating license is periodically renewed.
Jamaica—Jamalco: Declared reserves are as of December 31, 2013. The declared reserve and annual production
tonnages are AWAC share only (55%). Declared reserves are in the following areas: Harmon’s Valley, South
Manchester and Porus/Victoria Town. Current ore mining is in Harmon’s Valley, South Manchester and Porus/Victoria
Town. Additional resources remain in Harmon’s Valley, South Manchester, Porus/Victoria Town and North
Manchester. Resources are in the process of being promoted to reserves as land acquisition, resettlement and access
rights are secured. The Porus/Victoria Town exploration license area was added to Jamalco’s mining license (SML130)
during 2013.
Suriname—Suralco—Caramacca: During 2013, the Suriname Ministry of Mines notified Suralco that it is permitted
to continue to mine at Caramacca while the application for renewal of the mining permit is pending Ministry action.
Remaining bauxite at Caramacca has been reclassified as resources. Suralco intends to complete the mining of the
Caramacca resources during 2014.
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