White Swan Mines Co., Limited of San Francisco, California - 1903 dated California Mining Stock Certificate

The White Swan Mines Co., Limited, a historical mining company based in San Francisco, California, operated in the early 20th century. While specific details about its full operational history are scarce in public records, it is known that the company was active around the year 1903. The primary evidence of its existence and activities comes from collectible stock certificates issued to raise capital for its mining operations. This practice was common among the numerous mining ventures organized in San Francisco, which served as a central hub for trading mining securities after the California gold rush era.

The physical mining operation associated with the company was a gold mine located in Calaveras County, California. Situated at an elevation of 899 feet, the mine was recorded as a “past producer” site, indicating that it did yield some gold. However, the exact production volume is not specified in available records. The company was one of many mining operations that sought to capitalize on California’s mineral deposits, ranging from talc mines in Inyo County to various gold and silver mines across the state and into neighboring Oregon. The San Francisco Mining Exchange, which facilitated the trading of stocks for such ventures from 1862 until its closure in 1967, provided a market for investors to buy and sell shares in companies like the White Swan Mines Co., Limited.