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PHOTOCOPY OF DRAWING AMMONIA LEACHING PLANT GENERAL, DOUBLE EFFECT EVAPORATOR UNIT - Kennecott Copper Corporation, On Copper River and Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK HAER AK,20-MCAR,1-57
Summary
Picryl description: Public domain image of blueprint, engineering diagram, industrial design, early 20th century, free to use, no copyright restrictions.
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Date
2016
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public domain
