Icy temperatures across the Midwest and Northeast pose a concern for those who can’t afford to let a little chill stop them in their tracks.
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The polar vortex is a year-round atmospheric cyclone centered over the North Pole, with low pressure centers stretching from northern Canada to Siberia. It may seem to be a new term, but the polar vortex was first identified in 1853, along with an accompanying pattern over the South Pole. In January 2014, a southward shift in the Northern Polar Vortex caused extreme cold over much of North America. Minnesota became the coldest part of the United States at
−37 °F, and even Texas experienced temperatures as low as 16 °F. Such weather events can occur at least once a year.
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Tags: bulk material handling equipment, coal handling, hammermill
Bitterly cold temperatures keep people indoors, but it's largely business as usual for the unloading of bulk materials. Even in the extreme cold, the work still needs to be done. As temperatures drop, materials such as coal, coke, lignite, iron ore and wood chips tend to clump together as the water moisture they contain turns to ice. In the case of coal, a load can freeze nearly solid if the haul is more than one day away from its receiving station.
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