BRUSSELS, April 28 (Reuters) - Belgium's Nyrstar, the world's largest smelter of zinc, cut its forecast for the amount of zinc in concentrate it would produce from its mines as work at two of its sites were suspended.
Nyrstar said it would mine 240,000 to 260,000 tonnes of zinc in concentrate this year, down from its previous guidance of 280,000-310,000 tonnes.
The company said this was because of the on-going suspension of its Campo Morado mine in Mexico due to security concerns and a decision to halt operations at its Myra Falls operation in Canada as its performance deteriorated.
Nyrstar did repeat that it should smelt between 1.0 and 1.1 million tonnes of zinc metal this year after a first quarter in which a strong performance of its metal processing businesses pushed up revenue by 25 percent. (Reporting by Philip Blenkinsop and Robert-Jan Bartunek)