Editing Graphite (section)

===Other uses===
Natural graphite has found uses in [[Zinc–carbon battery|zinc-carbon batteries]], [[electric motor]] brushes, and various specialized applications. Railroads would often mix powdered graphite with [[waste oil]] or linseed oil to create a heat-resistant protective coating for the exposed portions of a steam locomotive's boiler, such as the [[smokebox]] or lower part of the [[firebox (steam engine)|firebox]].<ref>[http://list.nwhs.org/pipermail/nw-modeling-list/Week-of-Mon-20080623/002828.html True color/appearance of the "Graphite, or Smokebox colors]. List.nwhs.org. Retrieved on 2013-04-15.</ref> The [[Scope soldering iron]] uses a graphite tip as its heating element.