Be sure to tune into Discovery Channel tonight as Mike Rowe stars in an all-new episode of Dirty Jobs. In this episode, host Mike Rowe travels to Boise, Idaho to build and restore locomotives. There, his apprenticeship starts in the fabrication building, where he cuts raw steel into parts using a plasma burn saw. Next, he uses a forklift to break away any leftover soot residue from the burn saw by flipping the catch plate end-over-end in the parking lot. Meanwhile, in the engine refurbishing shop, Mike helps takes apart a locomotive engine and scrapes away old sludge from the inside. The old engine is then spun and cleaned in an acid bath while Mike visits the finishing area, where he shows off the locomotives getting their final touchups. It’s an amazing 200th job, as Mike gets to end his day driving a newly completed locomotive.

Remember, Dirty Jobs airs Tuesday nights at 9:00pm ET on Discovery Channel.