2. First Gold

'The Dakota Boys' launch their gold dredge. Fred dives in the raging white water, and despite running out of air, the 72-year-old veteran succeeds in finding their first gold.

3. Dredge Down

The first gold nugget promises a monster payday; Dustin dives into the danger zone, a torrent where the current moves rocks, and a rogue boulder almost costs him his life.

4. Boulder Battles

Fred's ex-boss, Todd Hoffman, has invested $50,000 in the Dakota Boy's operation and makes a surprise visit in a chopper.

5. Inland Tsunami

73-year-old Dakota Fred gets married for the fourth time and a landslide upstream threatens to unleash a wall of water that could destroy the dive site and drown the miners.

6. Hypothermia

The Dakota Boys' desperate bid to hit bedrock gold is thwarted when 73-year-old Fred's heating system fails mid-dive and he's is overcome by the glacial Alaskan water.

7. The Graboid

The Dakota Boys are digging down to bedrock gold but when they hit the biggest boulder of the season Dustin is forced to rig a new mechanical solution the Graboid.

8. End of Days

A flash flood racing down McKinley Creek threatens to kill the crew and destroy their operation, but the Dakota Boys still manage to find more gold than they've got all season.