1. Poisoning elements, like lead, cadmium and copper. 2. Toxic metals, like Zinc, Lead, Cadmium and Copper. 3. Poisonous metals like Lead, Cadmium and copper. 4. And they had this old brass and copper. 5. The common villager therefore uses a copper or brass kahala . 6. It was made of gold , silver and copper of about half a meter in length . 7. But stone seals, copper tablets, 8. The Indian Copper Corporation started production of copper in 1928 . 9. The Indian Copper Corporation started production of copper in 1928 . 10. This is one among the four oldest copper age civilizations in the world.
