40 Coal purification services; coal recovery services; coal blending services; mineral purification services for phosphate, iron ore, copper, platinum metals, lithium, bauxite, zinc, nickel and mining tailings; mineral recovery services for phosphate, iron ore, copper, platinum metals, lithium, bauxite, zinc, nickel and mining tailings; mineral blending services for phosphate, iron ore, copper, platinum metals, lithium, bauxite, zinc, nickel and mining tailings; Waste water treatment services