The Family began mining in 1930 with Great Grandpa Samual Holder. They expanded the Idaho company to northern California in 1962 and later Yukon Territory in Canada. After building a mining reputation, in 1993 Grandpa Jack moved half the operations to Guyana, South America. Today, after decades of mentorship, Jack’s Grandsons Chad & Lance Mishleau carry the ancestral torch of mining in Guyana.