Traditional metal working in Mexico more. Important metal working centers include Taxco for silver, Santa Clara del Cobre for copper, Celaya for tin and Zacatecas for wrought iron. Metal working in Mesoamerica, especially of silver, gold and copper was advanced by the time the Spanish arrived, mostly concentrated in the modern states of Michoacán, Oaxaca and Guerrero. The mining and working of metals probably came to Mesoamerican cultures from the south. Metal working was principally in gold, silver, tin and lead, with some copper work known in what is now Michoacán. Gold was generally obtained in powder or pellet form in rivers and streams from
Tankard novelty items. Modern metal tankards are often engraved to commemorate some occasion. Glass tankards—that is, straight-sided or inward-sloping glass vessels with strap handles—are still in everyday use. In previous centuries, the pewter used to make tankards often contained lead, which exposed the drinker to medical effects, ranging from heavy metal poisoning to gout. This effect was exacerbated in cider-drinking areas—such as Somerset, UK—as the acidity of the cider leached the lead from the pewter more quickly. Clay tankards became prevalent in this area. Pewter is now widely lead-free. A 1970s TV advertising campaign for Whitbread beer features a pub landlord