Update - Incident at Samarco

Update: Incident at SAMarco

This update provides further information on the incident at the Samarco Mineração S.A (Samarco) iron ore operation in Minas Gerais, Brazil on Thursday, 5 November 2015. Each of BHP Billiton and Vale holds a 50 percent interest in Samarco.

The Samarco operations include a three tiered tailings dam complex. Within this complex, the Fundão dam failed and the downstream Santarém dam has been affected. This resulted in a significant release of mine tailings, flooding the community of Bento Rodrigues and impacting other communities downstream. The third dam in the complex, the Germano dam, is being monitored by Samarco. At this time, there is no confirmation of the causes of the tailings release.

BHP Billiton's Chief Executive Officer, Andrew Mackenzie, will go to Brazil this week to understand first-hand the human, environmental and operational impacts of the incident. Meanwhile, BHP Billiton has offered its full support to help the immediate rescue efforts and to assist with the investigation.

BHP Billiton's immediate priority is the welfare of the Samarco workforce and the local communities.

Details are still emerging in relation to the Samarco employees and contractors impacted by the incident. At this stage, Samarco has advised that there is at least one confirmed fatality with a further 13 members of the workforce missing.

The number of people in the communities impacted by the incident is yet to be confirmed, but the local authorities have reported that, at this stage, there are at least 15 people from the communities unaccounted for.

BHP Billiton will continue to work with Samarco (operator), Vale, the local communities, local authorities, regulators and insurers to assess the full impact of this tragic incident. Further updates will be provided as soon as more information becomes available.

The Samarco operations have the capacity to produce 30.5 Mtpa of iron ore pellets and to process 32 Mtpa of concentrate. In the 2015 financial year, BHP Billiton's share of production was 14.5 Mt and the contribution from Samarco was approximately 3 per cent of the BHP Billiton Group's Underlying EBIT.

Following this incident, BHP Billiton's iron ore production guidance for the 2016 financial year is under review.

A media release issued by BHP Billiton on 8 November 2015 is attached.

Further information on BHP Billiton can be found at: www.bhpbilliton.com.

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statement from the bhp billiton board of directors:

samarco incident

The BHP Billiton Board of Directors extends its deepest sympathies to all who have been affected by the tragic events at the Samarco iron ore operation in Minas Gerais, Brazil.

The Board emphasised the Company would continue to provide Samarco with all the assistance necessary to support the response effort.

"Words cannot describe the impact of this tragedy on the employees and contractors of Samarco, their families and the community," said BHP Billiton Chairman, Jac Nasser.

"Our thoughts are with the people of Samarco, the affected community and with the people of Brazil."

BHP Billiton has extended immediate support to Samarco and continues to work closely with Vale, which is also a 50 per cent shareholder in the joint venture company.

BHP Billiton CEO, Andrew Mackenzie, will visit the incident site this week to meet with the Samarco response team, authorities and members of the community to understand first-hand the human, environmental and operational effects of the incident.

"Our first priority is to assist Samarco in safely and effectively responding to this terrible tragedy," Mr Mackenzie said.

"BHP Billiton employees have been deeply affected by this tragic event and Samarco has our full support as it continues with the response effort."

Editor's note - As operator, Samarco is providing updates on the response and the status of operations. Further information is available at: http://www.samarco.com

Further information on BHP Billiton can be found at: www.bhpbilliton.com.

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