The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% . Ghana has 23 large scale mining companies producing gold, diamonds, bauxite and manganese, and, there are .. about 120,000 metric tonnes per year (t/yr) of aluminum; the designed capacity of the plant is 200,000 t/yr.
Heavy Metal Pollution from Gold Mines: Environmental Effects and .
There was also limited capacity to move large quantities of materials and so the waste . In ores of higher gold content, the vat/tank leaching is employed, which .. Its concentration in unpolluted soil is usually 1 mg/kg , but in gold mine.