The smelting process released lead into the environment, and traces eventually became embedded in the soil, where today’s ...

But the most widespread exposure for Romans came from industrial pollution caused by the mining and smelting of ... for coins ...

Trafigura Group has launched a strategic review of its struggling Nyrstar zinc and lead smelting assets in Australia ... smelters have had to pay to process ore. Trafigura operates two smelters ...