Ajo in Pima County, Arizona — The American Mountains (Southwest)

The City of Ajo

Photographed By Bill Kirchner, May 12, 2010

1. The City of Ajo Marker

Located on the left side of the flagpole base.

Inscription. Ajo was first located on the ground that later became the open pit mine.

The modern city was founded in its present location in 1917 coincident with the beginning of large scale mining of the copper deposits.

Ajo is the home of the New Cornelia Mine of the Phelps Dodge Corporation which is one of the great copper mines of the world.

The open pit mine is located one mile south of the city and the concentrator, smelter and shops are adjacent to the town site on the east.

1917 – Leaching plant started in operation.

1924 – Concentrator started in operation.

1950 – Smelter started in operation.

Topics. This historical marker is listed in these topic lists: Industry & Commerce • Natural Resources • Notable Places. A significant historical year for this entry is 1917.

Location. 32° 22.339′ N, 112° 51.753′ W. Marker is in Ajo, Arizona, in Pima County. Marker is on La Mina Avenue, on the right when traveling north. Touch for map. Marker is at or near this postal address: 111 La Mina Avenue, Ajo AZ 85321, United States of America. Touch for directions.

Other nearby markers. At least 5 other markers are within 2 miles of this marker, measured as the crow flies. The Ajo Mining District (here, next to this marker); Ajo Train Depot (about 500 feet away, measured in a direct line);

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Curley School (about 700 feet away); The Mine Manager's House (approx. half a mile away); Old Clarkston Cemetery (approx. 1½ miles away).

More about this marker. Marker is mounted on the base of the flagpole in front of the Pima County Building known as the G.T. "Tom" Alley Courthouse

Pima County Building image. Click for full size.

Photographed By Bill Kirchner, May 12, 2010

2. Pima County Building

Pima County Building Marker image. Click for full size.

Photographed By Bill Kirchner, May 12, 2010

3. Pima County Building Marker

Photographed By Bill Kirchner, May 12, 2010

4. Pima County Building

Plaque mounted on the front of the flagpole base
Pima County Building
Ajo, Arizona
Erected 1949 - 50
Board of Supervisors
Chairman
J. Homer Boyd
Members
G. T. Alley
Lambert Kautenburger
D. O. Norton & Son
Contractors
Blanton & Cole
Architects

Welcome to Ajo Mosaic Sign image. Click for full size.

Photographed By Flexible Fotography, April 10, 2024

5. Welcome to Ajo Mosaic Sign

This sign is repeated at both north and south entrances to Ajo.

Credits. This page was last revised on April 25, 2024. It was originally submitted on May 16, 2010, by Bill Kirchner of Tucson, Arizona. This page has been viewed 1,551 times since then and 51 times this year. Photos: 1, 2, 3, 4. submitted on May 16, 2010, by Bill Kirchner of Tucson, Arizona. 5. submitted on April 22, 2024, by Flexible Fotography of San Diego, California. • Syd Whittle was the editor who published this page.