Production at Gold Fields Ltd.'s Cerro Corona gold mine in Peru has not been affected by a nearby protest against another large mining venture, the South African company said Monday.

Protests against the Conga mine, which is owned by Newmont Mining Corp. and Buenaventura, has resulted in interruptions of production activity at the mine, which is about 37 miles from Gold Fields' Cerro Corona mine.

Cerro Corona uses the same public road as Conga but has been able to secure supplies to maintain production for a further week and is considering alternative supply routes should the protest action be prolonged, Gold Fields said in a statement.

Gold Fields produces about 3.5 million gold equivalent ounces yearly from eight operating mines in Australia, Ghana, Peru and South Africa.  

Shares were up 27 cents to $16.82 in pre-market trading.