Katy is given a hard time by the "peanut truck". Samuel takes care of a mass blast that has surprises in store for him.

Mathieu moves and operates the spectacular long reach excavator. Bertrand fills 14-meter-deep holes with explosives.

On a moonless, snowy night, Alexis and Anthyme repair several machines, and Katy drives for long hours.

Under heavy snow, Edith visits accident-prone sites. Katy mentors an apprentice who gets behind the wheel for the first time.

Alexis and Anthyme resolve several mechanical glitches. Mathieu secures the walls of the mine aboard a tractor and a long reach excavator.

Martin participates in ice rescue training. Samuel installs explosives along a threatening wall.