The Borax Method of Gold Extraction for SmallScale Miners
mercury is required to extract one gram of gold. However, tailings from this process are often repeatedly run through the ball mills. Each time more auriferous, or goldladen, mercury flour is produced. Though less mercury escapes by this method, this type of amalgamation is also a significant source of pollution and loss of gold. Table 2 shows analysis of tailings in Tanzania which had been