· An estimation of the total number of mines worldwide based on the USA and Brazilian numbers and correlating it to their share of world production would result in between 135,000 and 245,000 mines in total worldwide. In Brazil, the 200 largest mines are listed separately and our assumption is that they represent the larger industrial mines.
VI The Mineral Processing Plant. Most mineral processing plants are represented by the flow sheet shown in Fig. 11. Simpler operations, such as a quarry producing aggregate, would involve only the initial stages of size reduction. Conversely, a more complex plant, producing a number of concentrates, requires a series of concentrating circuits.