ACRES International

ALCOA

Amphitheater School District

Arch Chemicals

Arizona Air National Guard

ASARCO

Barrick Corporation

BHPBilliton

BioteQ Environmental

Brush Welman

CarFe, Inc.

Centennial Contractors Enterprises

Chemical Lime Company

City of Tucson

Climatec

Climax Molybdenum Company

CNWC Architects

Columbian Chemical Company

El Paso Corporation

ElectroCopper Products

Environmental Cost Management

Environmental Resource Mgmt

Express Computer

Gould Pumps

Granite Construction Company

Graymont Lime Company

Hecla Mining Company

Heery International, Inc.

Huck Fasteners

IMATION

IMC

Industrial Motor & Control

ITT Industries

J.R. Kennedy

Kennecott

Kvaerner Industrial Contractors

Morenci Water & Electric

Newmont

Phelps Dodge Mining Company

Pima County

Pinal Creek Group

Pioneer Equipment

QWEST

Raytheon

Ronald Young Architects

Shamrock Environmental

Tucson Electrical Power

Tucson Unified School District

Tucson Water

University of Arizona

US Homes

Welman Sperides Mickelberg Architects