Own sourced copper production of 1,453,700 tonnes was 144,000 tonnes (11%) higher than in 2017, mainly reflecting the restart of Katanga’s processing operations in late 2017, partly offset by the completion of open-pit mining at Alumbrera. Own sourced copper sales during 2018 were some 22,000 tonnes lower than production, due to timing of shipments.

Cobalt production of 42,200 tonnes was 14,800 tonnes (54%) higher than in 2017, mainly relating to Katanga. Katanga’s current cobalt production is being temporarily stockpiled on site, pending introduction of a long-term solution to remove excess uranium levels in such cobalt.

Own sourced zinc production of 1,068,100 tonnes was in line with 2017, reflecting the offsetting impacts of the disposals of the African zinc assets in August 2017 and the restart of mining at Lady Loretta in mid-2018.
Own sourced nickel production of 123,800 tonnes was 14,600 tonnes (13%) higher than in 2017, mainly reflecting Koniambo running two production lines throughout the year.

Attributable ferrochrome production of 1,580,000 tonnes was in line with 2017.
Attributable coal production of 129.4 million tonnes was 8.8 million tonnes (7%) higher than in 2017, reflecting the recovery in Australia from weather-related and industrial action disruption and the acquisitions of interests in HVO and Hail Creek, partly offset by lower production at Prodeco as equipment was reallocated to additional overburden removal and mine development activities.

Oil entitlement interest production of 4.6 million barrels was 0.4 million barrels (8%) below that recorded in 2017, reflecting the Equatorial Guinea fields being in a period of natural decline, partly offset by an 11% increase in Chad production, up 0.3 million barrels following the recommencement of a drilling programme in H2 2017.