Hutchinson, Kansas still goes by the "Salt City" nickname. While drilling for oil in the 1800s, an extensive layer of salt was found there. The following article says there were two refineries in Hutchinson in the late 1800s along with salt mining and grain milling industries.

https://www.kspatriot.org/index.php...story/345-hutchinson-kansas-history.html

Jim "Oldgas" Potts
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