Summary: Tony Beets gambles millions to overhaul his operation. Rick Ness needs a wash plant that matches his big ambitions, while Dave Turin hunts for new ground.

Summary: Tony Beets battles the Klondike winter to secure a monster excavator. As the competition for ground heats up, Fred Lewis searches for the motherlode in Nevada.

Summary: Rick resurrects Monster Red to capture nuggets with help from Freddy Dodge and Tony builds a huge excavator. Dustin returns to Haines after a devastating landslide.

Summary: Tony Beets sets his sights on a $3.5-million monster dozer. Dave Turin hunts for a claim with his new Mad Max prospecting machine. To hit his 2000-ounce target, Rick Ness tests a pioneering drilling technique.

Summary: Tony Beets fights the Yukon winter to build a monster dozer. Fred Lewis prospects a claim that could be too good to be true. Dustin Hurt tries to reach his remote mountain camp to determine if he'll be able to mine this season.

Summary: Dave Turin prospects virgin ground on a snow-covered claim in Idaho. Fred Lewis explores an underground river in search of gold. Dustin and Carlos battle deep snow and brutal weather at McKinley camp.

Summary: Dave Turin's on the trail of a massive honey hole in Idaho. Rick Ness levels up his racing and mining operations. Fred Lewis fights through a snowstorm to prospect a missed opportunity.

Summary: Tony Beets finally learns the fate of his Indian River claims -- pivotal to his 9,000-ounce season. Fred Lewis tracks down virgin ground and is shocked by what he finds. Rick Ness gets a jump on the season with a massive Komatsu dozer.