Mineral processing, art of treating crude ores and mineral products in order to . not suitable for machine sampling (slimy ore, for example) or where machinery is . similar composition) can be produced, and the valuable mineral components.
In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the . Before the advent of heavy machinery the raw ore was broken up using hammers wielded by hand, a process called "spalling". Before long.