Bougainville Copper Limited (BCL) is a mining company of Papua New Guinea (PNG) that is listed on the Australian Securities Exchange (ASX). BCL operated the copper, gold and silver mine at Panguna in central Bougainville (Bougainville Island) in PNG from 1971 to 1989. Mining operations were officially halted on 15 May 1989, due to militant activity and the mine has remained closed since.
Bougainville Copper trained around 12,000 employees, including approximately 1,000 completing full trade apprenticeships and some 400 completing graduate and post-graduate studies that resulted in considerable progress in the localisation of the company’s employees and significantly added to the number of skilled workers elsewhere in the country’s workforce.
Although the Panguna mine has not operated since 1989, BCL has always maintained a presence in PNG and with the support of the Autonomous Bougainville Government (ABG) is implementing a redevelopment plan which could lead to the recommencement of mining at Panguna.
Mining giant Rio Tinto, which was historically Bougainville Copper Limited's major shareholder, exited on 30 June 2016 when it transferred its 53.8 per cent shareholding for distribution to the Autonomous Bougainville Government and the Independent State of Papua New Guinea.
The mine was vitally important to the economy of Papua New Guinea. The PNG national government received a 20% share of profit from the mine, of which the Bougainvilleans received 5% - 1.25% share of the total profit.
The first Bougainville independence movement began to arise in the late 1960s, as people began to air their grievances against the then Australian colonial government over the handling of the Panguna mine. Australian External Territories Minister Charles Barnes was accused of telling the Bougainvillean people they would "get nothing". The issue of compensation went to the High Court of Australia, where it was found that the compensation was inadequate under ordinary federal Australian law, but that as an External Territory, Papua New Guinea was not guaranteed the same standards that applied to mainland Australia. Papua New Guinea has been an independent country since 16 September 1975.
In 2010, using interviews with BCL executives and internal company documents, Dr Kristian Lasslet of the University of Ulster published adverse findings about the company from during the period of civil war. This research suggested that BCL placed pressure on the PNG government to assert its authority on Bougainville, following acts of industrial sabotage. The company purportedly aided the security forces by providing them with trucks, fuel, accommodation, communications equipment, storage space, messing facilities and office resources after concerns about human rights abuses became apparent. These allegations were previously denied by BCL's former Chairman, but Dr Lasslett insists on their veracity.
In his first statement on Radio Australia Pacific Beat on 8 June 2010, the newly elected President of Bougainville, John Momis, declared that the Panguna mine has to be reopened to assure Bougainville's future economic growth.
A referendum on Bougainville's independence must be held no later than June 2020 under the Bougainville Peace Agreement.
During 2017, President Momis and the Autonomous Bougainville Government have continued to advocate for the re-opening of the Panguna mine and have nominated Bougainville Copper Limited as the preferred project developer.
- "BCL Annual Report 2016"
- "Bougainville Copper Limited shareholding", Rio Tinto media release, 30 June 2016
- "Bougainville Copper Limited". Rio Tinto. Retrieved 11 June 2016.
- Ewins, Rory,"The Bougainville Conflict" accessed 24 June 2009
-  (Benggong v Bougainville Copper Pty Ltd  HCA 31; (1971) 124 CLR 47)
-   Lasslett, K (2010) 'Saving Hearts and Mines'
-  Regan, A. & Lasslett, K. (2013)'"Not Credible" - Ausaid mining adviser defends Rio Tinto against war crime allegations'
- , Radio Australia
- "President Momis commits to new BCL", PNG Loop, 18 March 2017
- Bougainville Copper Limited
- European Shareholders of Bougainville Copper (ESBC)
- Bougainville Copper Limited - All Annual Reports since 1967
- Blood and Treasure - SBS documentary 2011