Global silver trade from the 16th to 18th centuries American mining for the early part of the 16th Century. Mining in the Americas became formally industrialized when the process of mercury amalgamation became popularized. Mercury amalgamation was invented by a Spaniard in central Mexico in the 1550s. Historians dispute what individual was the first to invent the process, however most agree that it was a Spaniard. Mercury was the one of the highest costs of production for the Americas, since much of it had to be shipped. The ratio of Mercury to silver produced was about two to one. Furthermore, German miners introduced the stamp mill and lead smelting
Aztec Student Union Aztec Student Union The Aztec Student Union is a student union in the center of San Diego State University's campus, just east of Malcolm A. Love Library. The Aztec Student Union was known as the Aztec Center from 1968-2011, when it was demolished for the Aztec Student Union. The Aztec Student Union leads into the heart of the SDSU campus and is located near many classrooms and administrative services. The Aztec Center offered a variety of services, places, and spaces geared to the needs of students including restaurants, movie theater, meeting rooms, and various student organizations. It was also home