Ann: First Plomosas Ore Shipped for Sale, page-5

And just to add another advantage - freshly minted free trade agreement between USA and Mexico, and likely increase of Zinc consumption (and price) for local manufacturing industry.

On the other hand, China imposed tariff on Zinc from the USA, but that might not last. If it does and Chinese tariff really increases from 10% to 25% at the end of the year, that might be actually beneficial for Mexican Zn production as they'll have price advantage to export to China.