The first day of Azar falling on November 22 has been marked in Iran’s national calendar as Lead and Zinc Day, a reminder of how central this industry has become and how closely it is tied to the country’s economic…
The first day of Azar falling on November 22 has been marked in Iran’s national calendar as Lead and Zinc Day, a reminder of how central this industry has become and how closely it is tied to the country’s economic…