PJ & Andy's main investor gives them an ultimatum, Chris discovers a clue that could lead to a huge payout, and Ed & Riley's season might end early.

Big Al's plans are hurt by no-show staff, PJ's wife questions if mining is worth it for their family, and Ed & Riley hit their stride - til they run out of fuel.

A desperate Big Al pushes Hiro to the limit, Chris looks for big gear to salvage his season, while PJ & Andy's camp has a mini-revolt.

Chris risks his season on a new cut, Andy struggles to manage the mine on his own while Ed and Riley go hunting.

Works grinds to a halt for Big Al when Hiro's Curse returns, while unstable ground shuts Chris down, and Riley clashes with Ed's father-in-law.

Big Al's health takes a hit, Chris struggles with a rookie mine hand while PJ & Andy battle floods and breakdowns.

A new season starts with a bang for Chris & Nika, but Big Al has devastating setback and two new camps fight weather & bad mountain roads.