Day & Zimmermann Co

Day & Zimmermann Company, headquartered in Irving, TX, has established itself as a leader in maintenance and construction services, with a focus on the power, chemical, and industrial markets. With over 120 years of innovation, the firm also plays a critical role in the defense sector by manufacturing, storing, and demilitarizing a wide variety of ammunition products for the U.S. government and approved foreign countries.

The company is recognized for its commitment to safety, integrity, and diversity, earning accolades such as being ranked #1 in Engineering News-Record's Top Power Contractor List in 2023. Day & Zimmermann's focus on sustainability and social responsibility is reflected in its high ratings on corporate equality and its comprehensive approach to operational excellence in various sectors.

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