Toronto-headquartered Lundin Mining has improved its guidance for 2019, tightening the lower end of the production range for copper and zinc, as well as lowering the operating cost guidance for the Chapada and Neves-Corvo mines. The revised copper guidance for the year is a range of 227 000 t to 245 000 t, raising the bottom-end from 224 000 oz, reflecting a slight improvement in the forecast for the Eagle mine, in the US, and higher guidance for the Neves-Corvo mine in Portugal.