A legendary miner fights to keep Cobalt Coal from going belly up. Major mistakes by the Night Shift almost cost the company their livelihood, while one of the deadliest jobs claims another victim.

A devastating storm smashes the Cobalt Mine, causing power outages and equipment failure. Hank returns from the hospital to find his job on the line, and the possibility of being sent to the house permanently.

Cobalt owners, Mike and Tom, are facing financial ruin when they roll the dice with a risky belt move that pays off. With the mine half buried in coal, Mike pleads to the trucking company to rally for a record breaking week.

Cobalt is forced to mine in the most dangerous part of the mountain, making conditions even more deadly. A skeleton day crew is forced to face the mountain alone, but an unlikely hero, Vince, steps up.

As the mountain crumbles around them, a crucial piece of equipment is smashed, putting the future of the company in jeopardy. Cobalt Coal is forced to make the biggest financial gamble yet. Can a redhat prove to be their savior?

Owners Tom and Mike have gone deep into debt to finance new equipment, and now they're desperate to mine more coal than ever before. To make matters worse, someone is stealing from the mine.

Danger in Cobalt Coal mine increases. The continuous miner hits water and almost floods the section, and a meeting with a local old-timer force Mike and Tom to come to a drastic decision regarding the direction of the mine.

The mine gets deadly and conditions force Cobalt to change direction. To get the new lease to go right, they'll have to double production. The pressure is on the night crew to get back in the coal or go to the house for good.

In the dramatic season finale, Mike and Tom work frantically to get the new lease approved as the mine starts to fall apart. The biggest rock fall yet leads to a fight so explosive it threatens to tear the company apart.