Of a total worldwide Zinc production of 11.a Mt, 10.6 Mt was smelter Zinc in which 4.97 was categorized as either primary or secondary. The remaining 5.63 Mt (53%) was not differentiated. Production from secondary sources is estimated at 7.5% of the differentiated 4.97 Mt.Secondary production uses 76% less energy than primary

Of a total worldwide Zinc production of 11.a Mt, 10.6 Mt was smelter Zinc in which 4.97 was categorized as either primary or secondary. The remaining 5.63 Mt (53%) was not differentiated. Production from secondary sources is estimated at 7.5% of the differentiated 4.97 Mt.Secondary production uses 76% less energy than primary