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Developed as a medium-capacity tie inserter/extractor, the Model MRT-2 tie renewer is suited for work on high-density lines where on-track time is short, the company says. The unit is also used for tie renewal work in yards or on secondary lines. Under normal conditions, 50 old ties can be extracted and 50 new ones inserted per hour. When employed as a straight tie extractor or tie inserter, with two machines working in tandem, production rates can be increased. It can climb on and off the track to clear for trains. An optional kicker is available, ensuring maximum productivity even when removing the oldest ties, the company says.