Incredible Rotary Snowplow Cuts a Path in the Snow for Trains While it’s still summer for many of us, we can’t help but think about the upcoming cooler temperatures. This historic and impressive piece of machinery is the rotary snowplow, and it’s used for clearing train tracks after a heavy snowfall. The large, circular set of blades on its front are rotated by an engine that’s held within its frame. But although it contains an engine, the snowplow isn't a self-propelled vehicle. This means that one or more trains must follow behind to push it along the tracks as it cuts a path in the snow.
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