Freehill Mining (ASX:FHS) completed magnetic test work on a 400-kilogram bulk sample of magnetite from its Yerbas Buenas mine in Chile with a grade of 65.75% of iron achieved from material crushed to 6 millimeters, according to a Tuesday Australian bourse filing.

The result provides the basis for further magnetic test work, which will include assessing material crushed to 3 millimeters and 5 millimeters to determine if a higher grade concentrate can be produced.

It will work on mine planning, reviewing different permitting scenarios, and defining the necessary capital expenditure to restart magnetite mining from the historical pit.