Australian gold rushes been found on his station at Clunes in March 1850. Bruhn also explored the countryside and found quartz reefs in the vicinity. "This information he promulgated through the country in the course of his journey." One of the people to whom Bruhn communicated this information was James Esmond who was at that time engaged in erecting a building on James Hodgkinson's station "Woodstock" at Lexton about 16 miles (25 km) to the west of Clunes. This then indirectly led to the first gold rush in Victoria from Esmond's subsequent discovery of payable gold at Clunes in July 1851. Bruhn also
Porcupine Gold Rush their employees. The mines peaked between the 1940s and 50s, but continue to produce gold to this day, although the many smaller mines have been consolidated into a small number of larger holdings. By 2001, 67 million troy ounces of gold have been mined from the Porcupine area, making it by far the largest gold rush in terms of actual gold produced. For comparison, the well-known Klondike Gold Rush produced about 12 million troy ounces. The Porcupine rush, along with the Cobalt Silver Rush and Kirkland Lake Gold Rush, all in the early 20th century, drove most of the settlement