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 West fund but in the mid-1980s was sold to Arlington Securities. The buildings are in the high tech and postmodern styles and were designed by practices including Nicholas Grimshaw, Michael Aukett, SOM and CZWG. In 2018, selected buildings on Aztec West were listed. Aztec West is home to over 100 companies, and 7,000 people work there. The Aztec Centre was opened by Margaret Thatcher on Friday 15 December 1989 and there is a plaque to commemorate this in its entrance. The park includes warehouse/factory units, the four star Aztec Hotel, several office villages, a central retail area and a Starbucks connected