 In 1973, the company was rename Rosario Resources Corporation to reflect its greater geographic and product diversification.In 1976, Rosario's acquisition of the Fresnillo Company in Mexico helped it become the largest silver producer in the Western Hemisphere.In the late 1970s, the rapid rise of prices for all of Rosario's products resulted in spectacular profits for the company, and it became a highly visible target for larger companies searching for growth.