Assaying Tin Ore 911Metallurgist
Tin Ore Assay —The ore to be smelted or assayed should be concentrated to say not less than 50 per cent of metallic tin; though to obtain satisfactory results it should be brought nearer 70 per cent as with ore containing less than 40 to 50 per cent of metal there will be a considerable loss both in the assaying and in the smelting