Taken from Silverado Gold Mines website, the last two paragraphs of Nolan Creek Project.

NOLAN CREEK LODE: SEEKING THE SOURCE

This trend is the target of current lode exploration for the source of the gold and antimony material found on the Nolan Creek Property. Economically viable concentrations of gold and antimony mineralization have been located within this trend wherever drilled, and the size and intensity of the anomaly, plus the existence of one or more similar deposits to the one currently being delineated lend the opportunity of disclosing a world class deposit of combined gold and antimony.

Additional and exceptional value may be duly placed on the fact that it may well be the only near term antimony producer in North America.

http://www.silverado.com/projects/nolan-creek/