Day & Zimmermann's family of companies provide services to business and government in six business areas.
Architecture/Engineering/Construction and Plant Services
Day & Zimmermann provides architecture, design, engineering, construction management and plant services to businesses around the globe and to the U.S. government.
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The Mason & Hanger business is a full-discipline architectural-engineering-construction firm known for the following specialty areas: Fire Protection, Anti-Terrorism - Force Protection - Force Projection, Blast Design - Munitions Expertise, and LEED - Sustainable Design - SPiRiT.
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Maintenance and Modification
Day & Zimmermann NPS® is a union labor contractor providing a full array of maintenance and modification services at nuclear and fossil-fired power plants.
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Munitions and Government Services
Day & Zimmermann provides munitions production and related technology, facility, security and management services to the U.S. and approved foreign governments and defense contractors.
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Security Services
Day & Zimmermann delivers a comprehensive portfolio of security solutions to specialty markets and facilities, including armed and unarmed guard services, uniformed security, executive protection and special event security.
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Day & Zimmermann is specifically recognized for providing high-end security forces for sensitive environments. The company provides the Department of Defense and the Department of Engergy with armed and unarmed security guard forces and it provides security at its GOCO operations at Newport, Hawthorne, Lone Star and Kansas.
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Talent and Outsourcing
Yoh provides long- and short-term temporary and direct placement of technology and professional personnel, as well as managed staffing services, for the IT, scientific, engineering, health care and telecommunications communities.
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Validation Services
Day & Zimmermann provides a complete portfolio of qualification, systems validation, regulatory compliance and quality assurance services to pharmaceutical, biotechnology and medical device companies worldwide.
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