Editing Hopper car (section)

== Use ==
Hopper cars have been used by railways worldwide whenever automated cargo handling has been desired. "Ore jennies" is predominantly a term for shorter open hopper cars hauling [[taconite]] by the [[Duluth, Missabe and Iron Range Railway]] on [[Minnesota]]'s [[Iron Range]].  The [[Coke Express]], a  [[CSX Transportation|CSX]] [[unit train]] of hopper cars loaded with [[Coke (fuel)|coke]], with the words "Coke Express" painted on the sides of the hoppers.
[[File:Covered_hopper_grain_car.webp|left|thumb|Covered hopper grain car]]
Large [[Unit train|unit trains]] of various grain crops are a common sight in [[North America]], reaching up to 125 cars long. These predominantly haul grain from the large farming areas of the [[Great Plains]] to various markets, but a number of unit trains originate from other major farming areas, such as [[Illinois]] and [[Indiana]] as well as the Canadian provinces of [[Alberta]], [[Saskatchewan]] and [[Manitoba]]. These trains may originate from a single [[grain elevator]], or may be marshaled in a [[Classification yard|yard]] from various locals (short trains which serve nearby industries). The destinations tend to be large [[Flour mill|flour mills]] or [[Port|ports]] (for export), or they may be split up and delivered to multiple locations. The empty cars may return as a whole train, or may be sent back in smaller quantities on manifest trains (trains which carry just about any type of freight). These trains are used primarily for hauling products such as [[Maize|corn]], [[wheat]] and [[barley]].