LONDON, June 11 - Alcoa Corp ( AA ) expects shipments from

its Pinjarra alumina refinery in Australia to fall by around

120,000 metric tons in the second quarter compared to the first

quarter due to the impact of Cyclone Narelle, its chief

financial officer said.

The cyclone, which hit Australia in March, disrupted LNG

supply to the 4.7 million ton per year capacity Pinjarra plant

and increased second-quarter production costs by $30 million,

Molly Beerman told the Wells Fargo Industrials & Materials

Conference in Chicago on Wednesday.

* Alcoa ( AA ) is also expecting additional fuel costs of $15

million in the quarter at its Sao Luis alumina refinery in

Brazil due to the conflict in the Middle East, Beerman said.

* Sao Luis remains profitable, but Alcoa's ( AA ) alumina business

is "very pressured right now" and the refineries in Western

Australia are "really challenged" due to low alumina prices and

poor-quality bauxite. "So the segment as a whole will be under

water," she said.

* Alcoa ( AA ) is helping its aluminium smelter customers in the

Middle East redirect some of their contracted alumina cargoes,

primarily to China, because of their war-driven production

constraints, Beerman said.

* Alcoa's ( AA ) shares plunged 9.5% on Wednesday to $65.55.