The run-of-mine ore from Beltana requires size reduction prior to introduction to any further process, whether it be a beneficiating or extractive process. Two methods of extraction are being considered: namely, leaching, which requires beneficiation of the low grade ore at Beltana, and fuming, which requires size reduction only. For both beneficiation or fuming, a maximum particle size of 1/2 inch is required, and especially for beneficiation the quantity of fines should be minimised.