When muddy meltwater infiltrates Todd's wash plants, Andy must re-engineer the entire water circulation system to keep their gold from floating away.

A routine mining decision leads to disaster when silt runoff threatens a nearby creek. Todd attempts an engineering solution to help save the mine.

When state inspectors make a surprise visit to the mine, the Hoffman team races to save their operation before the inspectors return with a verdict.

Frustrations reach a breaking point between Chambo and Andy. For Todd, it comes down to a single gold weigh to keep his crew intact.

When the Black Pearl's trommel motor catches fire, Todd's crew attempts to modify the smaller wash plant Jack built decades ago to run more pay dirt.

Ice sets in early, threatening to freeze the operation. In a desperate search for unfrozen ground, Andy creates a novel solution: digging up the road.

Todd and his family gamble on a remote, broken-down Alaskan mine.

Todd must fix a massive wash plant and squares off with the mine owner.

Todd fires up the derelict Big Trommel in desperation for more paydirt.

It's Jack's birthday but outstanding season goals leave no time for cake.

Todd pushes his team to get a third wash plant up before the big freeze.

With both plants running, the competition between Todd and Hunter is on. But a damaged waterline and hose problems force cause issues for both plants.

Hunter takes on the arctic tundra when he hears of legendary gold in the distant creeks. Back at the camp, Andy works to turn paydirt into a big payoff.

The Hoffmans rush to get a vein of gold out that could save their season.

After a wash plant breakdown, Todd's last resort is firing up the Hot Mess.

Todd works the night shift hoping to hit his million-dollar goal.

Three generations of the Hoffman family hope to mine $5 million in gold. As Jack reveals shocking news, Todd targets more ounces of gold than ever.

Andy battles mine-stopping mud flows with an engineering longshot as anticipation grows for what could be the Hoffmans' all-time biggest gold weigh.

Hunter seeks new paydirt before the Lost Cut runs dry. Todd secretly ships Jack's 1980s-era washplant to fulfil his dad's original gold-mining dream.

Todd Hoffman is ready to get back in the mining game. He's putting his life savings into an ambitious plan to turn around a distressed mine in Nome, Alaska.

Todd's crew races to beat 1,000 ounces and make a profitable final season for Grampa Jack. They are hampered by a heavy snowfall in the forecast.