View of a worker examining a rotary dryer for drying salt at an unknown facility in Hutchinson, Kansas. This photograph is one of a set of six stereographs detailing the mining and production of salt.
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“Rotary Dryer for Drying Salt, Hutchinson, Kansas.” Underwood & Underwood, n.d. Underwood & Underwood Stereographs of Manufacturing Industries. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/qv33rw655.
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