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 Soccer Club yet to be announced. The Boston Aztec women’s team began play in 2005 in the WPSL, which was ranked as the #1 women’s soccer league in the United States by Women's World Football Ranking Service in 2005. In 2006, the Aztec women earned their first winning record (3-2-6) and played the eventual 2006 WPSL Champion Long Island Fury to two 0-0 draws. In 2006, they played home games in Salem, MA at Salem St. College’s Alumni Field. The Aztec Soccer Club’s Premier (U15-U18) and Jr. Aztec (U11-U14) boys and girls teams play in the New England Premiership (NEP) and compete