Nevada is commonly called the "Silver State" because of the silver produced from the Comstock Lode. However, since 1878, Nevada has been a relatively minor silver producer, with most subsequent bonanzas consisting of more gold than silver. In 1900, Jim Butler discovered Nevada's second largest silver strike in Tonopah, Nevada. Nevada is currently ranked as the second largest producer of silver in the United States. Nevada's leading silver producer is the Rochester Mine in Pershing County. This mine ranks behind the Greens Creek mine in Alaska, the largest producer of silver in the US.