### COMMISSIONING OF THE 375ktpm AUTOGENOUS MILLING .

The secondary milling circuit is designed to treat the total primary mill product through a single 23ft x 31.5ft, grate discharge ball mill also fitted with dual 5.2MW drives. The mill grinds the primary mill product to the required flotation feed size of 67% - 75µm and is designed to take up to 32% steel balls if .