AF Sterling Homes

Alamos Gold Inc.

American Tower

Arizona Aerospace

Arizona Department of Transportation

Arizona Portland Cement

Arizona Public Service

Arizona State University


Association of Universities for Research in Astronomy

Augusta Resource

Barrick Goldstrike

Battle Mountain Gold

BHP Copper

Boeing Corp.



Caid Industries

California Institute of Technology

Canyon Water District

Capital Gold Corp.

Carnegie Observatories


Cemrock Corp.

Chemical Lime Co.


City of Tucson

Cobre del Mayo

Cornell University

CTI, Inc.


Diversified Design & Construction

Farallon Resources Ltd.

Freeport McMoRan Inc

Frontera Copper Corp.

General Moly Inc.

Glamis Gold Ltd.

Global Alumina Corp.

Goldcorp Inc.

Golden Queen Mining Co. Ltd.

Granite Construction

Greenlee County

Greenstone Mining

Grupo México

Hecla Mining Co.

Hexcel Corp.

Honeywell International

Idaho General Mines

Industrias Peñoles

Kennecott Utah Copper

Kerr-McGee Corp.

Kinross Gold Corp.

KT Clay Company

Large Binocular Telescope Corp.

Lincoln Lab/MIT

Lowell Observatory


Magdalena Ridge Observatory

Maricopa County Mine

National Radio Astronomy Observatory

New Mexico Tech University

Newmont Mining Corp


Northisle Copper and Gold Inc.

Pan American Silver Corp.

Perpetua Resources Corp. (Previously Midas Gold)

Phelps Dodge Corp.

Pima Community College

Pima County

Pimalco Inc.

Pinal Creek Group

Quadra Mining

Raytheon Company

Resolution Copper Company

Rosemont Copper Co.

Sanmina – SCI

SH&G Southwest

Smithsonian Institution

Southern Peru Copper Company

Spectra Physics Lasers Inc.

Sprint State of Arizona Steward Observatory


T.L. Roof Construction Co.

Teck Cominco

Tetra Tech

The University of Arizona

Thirty Meter Telescope Corp.


Torex Gold Resources

Tucson Airport Authority

Tucson Unified School District

Western Copper and Gold Corp.

Yamana Gold Inc.

Zaruma Resources