The deal was part of several mine sales from Newmont Corp. to reduce debt after acquiring Australia's largest gold producer.

Gold miner Discovery Silver said on Monday it would acquire its peer Newmont's stake in Porcupine Operations in Ontario, Canada, for $425 million.

"From there, people would call and say, 'I saw you're selling a gold mine. Wanna sell mine too?'" he said. Treadwell has sold mines to amateurs and professionals alike. Small claims sell for less ...