Heintzleman Mine

Pima County · At the Kinsley turnoff to Arivaca, near Amado on U. S. Highway 89. · location approximate

Along this road is THE HEINTZLEMAN MINE near Arivaca In 1856, this mine attracted investors to Arizona after handpicked silver ore was hauled overland to Kansas City. Samuel Colt, famed arms manufacturer, was one of the principal financiers. It was the first Arizona mine to use modern ore-reducing machinery, but was abandoned at the outbreak of the Civil War; never again an important producer.

Proposed in this 1958 book. We have not found independent confirmation that this one was cast. That 1997 list covers only state highway right of way, so it does not reach markers on city streets, on tribal land, or in state and national parks.

1958 text, presented as a historical document. It uses the period's terms for Native people. The book proposed 100 markers for Arizona's highways and records 14 as cast when it went to press.

Arizona still marks its history under the same law: the State Historical Advisory Commission approves a marker, the Arizona State Library, Archives and Public Records certifies that its text is authentic and historically correct, and the Arizona Department of Transportation erects and maintains the markers on state highway right-of-way. Arizona State Library, Archives and Public Records ↗

David Rumsey Map Collection, Stanford Libraries

Marker data: Historical Markers in Arizona, Vols. I-II (Arizona Development Board, 1958), text by Bert Fireman

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