MxMining

Project History:
The Cerro Chato Project is just west of the Piedras Verdes Project. It has the potential to increase the life of mine of the Piedras Verdes Project.

Property History:

• The first work on the Promontorio property began in the early 1900s by the Manhattan Exploration Co., with funding provided by J.P. Morgan interests. An inclined shaft reaching a depth of 158.5 meters was collared in the hanging wall of the northeast-striking fault on a topographically prominent mineralized outcrop. Two other exploration shafts located to the north were sunk to depths of 30 meters each and a production shaft was sunk to a depth of 25 meters when work was suspended in the 1920s due to the Yaqui rebellion.
• In 1958, J.G. White Engineering Corp. recommended the property be put into production. An open cut 85 meters long from 7 by 25 meters wide and 20 meters deep was excavated to expose ore about the 100-level and a small mill was installed at the property.

Property History:

• Production started in 1998.
• In 2005 183,687 ounces of gold were taken out of the La Herradura mine.
• In 2006 181,610 ounces of gold were taken out of the La Herradura mine.
• In 2007 196,727 ounces of gold and 250,567 ounces of silver were taken out of the La Herradura mine at an average or grade of 0.75gpt Au.
• Currently Sonora state's largest producing mine.