Doing Business in Mexico or Latin America?
Mexican Investment Board: Mexico's point of contact for foreign companies doing business in Mexico. Useful information and a great set of links to other important information sites.
US-Mexico Chamber of Commerce: Your most important website to get you in business with Mexico - Bar None! Great set of links too.
LatinStocks.com: This is really a worthwhile site to "mine information" on Mexican listed companies. Their Mexico page is a window into the Mexican Business and Financial Markets. Direct access to companies listed on the Mexican exchanges. Research available on listed companies from Zacks and also Wright Investor's Service. Copies of Foreign Investment Law. No Fees.
NAFTAnet: A good resource on Doing Business in Mexico is their Reporter section that contains articles on the Mining Industry such as "Mother Lode" and Internet Connectivity such as "Accessing Mexico"