Gold Hawk Resources has signed a contract with Tetra Tech for environmental baseline studies for the Oracle Ridge Copper Mine, located in Pima County, Arizona, US.

Gold Hawk vice-president of operations Vic Rozon said it is a critical first step in bringing the Oracle Ridge Mine back into production.

Oracle Ridge is an underground mine with 11 miles of workings and has not been in production since 1996.

It is expected to process an estimated 2,000t of ore a day once its works are permitted.