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Engineering, Construction & Maintenance

Day & Zimmermann helps industrial plant owners in the Nuclear, Fossil, and Process industries lower their total cost of ownership by delivering innovative engineering, construction, and maintenance services and solutions.

We deliver complex projects safely, on time, and within budget by leveraging wide-ranging capabilities, long-standing industry experience, innovative technology, and expert project teams.

Our unique approach employs seamless processes that effectively manage all aspects of the plant life cycle.

We do what we say® so that our customers can do their best work better.

#1 Maintenance Services provider in the US