“For the past three years we???ve worked with Kiewit to understand the challenges in supplying gases and welding equipment to their job sites across the country”

???For the past three years we???ve worked with Kiewit to understand the challenges in supplying gases and welding equipment to their job sites across the country,??? said Jack Appolonia, Airgas vice president ??? construction. ???We are proud of our relationship and will continue to deliver the value Kiewit expects of the industrial gases, welding equipment and supplies, and Red-D-Arc welding equipment rentals Airgas provides to more than 280 Kiewit job sites nationwide.???

Airgas has developed a strategic organization focusing on specific market segments in order to fully understand customer challenges and provide custom-tailored solutions. Airgas market segment leaders work with account managers and teams within 12 Airgas regional organizations and more than 850 branch locations nationwide to provide the right solutions for a broad array of industries. The Airgas strategic accounts group and the Airgas construction group are working together to meet the gases and welding equipment needs of Kiewit.

About Kiewit Corporation

Kiewit is one of North America???s largest and most respected construction and engineering organizations. With its roots dating back to 1884, the employee-owned company operates through a network of offices in the United States, Canada and abroad. Kiewit offers construction and engineering services in a variety of markets including transportation, water/wastewater, heavy civil, power, oil, gas and chemical, building and mining. With 2009 revenues of nearly $10 billion, Kiewit???s workforce includes approximately 10,000 salaried and hourly staff along with more than 15,900 craft workers.

About Airgas, Inc.

Airgas, Inc. (NYSE: ARG), through its subsidiaries, is the largest U.S. distributor of industrial, medical, and specialty gases, and hardgoods, such as welding equipment and supplies. Airgas is also one of the largest U.S. distributors of safety products, the largest U.S. producer of nitrous oxide and dry ice, the largest liquid carbon dioxide producer in the Southeast, and a leading distributor of process chemicals, refrigerants, and ammonia products. More than 14,000 employees work in approximately 1,100 locations, including branches, retail stores, gas fill plants, specialty gas labs, production facilities and distribution centers. Airgas also distributes its products and services through eBusiness, catalog and telesales channels. Its national scale and strong local presence offer a competitive edge to its diversified customer base. For more information, please visit www.airgas.com.