The Day & Zimmermann GroupPhiladelphia, PA, United States

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Day & Zimmermann Company Description

Day & Zimmermann offers services as distinct as day and night. Its family of companies provide engineering and construction, design, plant maintenance, security, staffing, munitions decommissioning, validation, and asset management services worldwide. A top global contractor, Day & Zimmermann provides operations, contract support, and maintenance services to US and foreign governments, as well as commercial customers. Its Day & Zimmerman NPS unit maintains half of the US's nuclear plants. Staffing subsidiary Yoh Services specializes in filling IT, engineering, and health care positions. Founded in 1901, Day & Zimmermann is owned and managed by the Yoh family, which has headed the firm for three generations.

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The Company Description provides a historical perspective of Day & Zimmermann's organization from inception to current status.

Produced by Hoover's in-house editorial team, the Company Description tracks ownership transitions, company progress via mergers and acquisitions, major growth milestones, and strategic initiatives, to provide a holistic view of Day & Zimmermann's evolution in the marketplace.

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