LME Aluminum Stockpiles Sink to Lowest Level Since 1990

Norwegian aluminum producer Norsk Hydro's Alunorte plant in Brazil, one of the world's largest alumina refineries, reduced output by 50% following disruptions to natural gas availability.

Bloomberg reports that disruptions to NatGas availability at Alunorte forced a 50% reduction in output and sent aluminum prices in London to a seven-week high.

Hydro said production would return to full capacity once gas supplies normalize.

Aluminum rose nearly 2% in London and traded at $3,373 a metric ton.

Alumina futures gained 1% in Shanghai.

NatGas is critical…