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Greenhorne & O
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APR Energy World Headquarters
Sketch by Ebert Norman Brady Architects
G&O is providing engineering services for the development of APR's worldwide headquarters – a 15-acre campus that includes a corporate office and logistics warehouse/handling facility. more

Company News
LAUREL, MD – January 24, 2011 – Engineering consulting firm Greenhorne & O'Mara (G&O) has joined the energy industry's Marcellus Shale Coalition (MSC). G&O has provided energy-related services since its inception in 1950, and the new alliance with the MSC is an extension of G&O's presence in the Marcellus Shale natural gas region. more
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Engineering News Record (ENR)
In the 2010 Engineering News Record (ENR) survey of national engineering firms, G&O ranks 126th among the Top 500 Design Firms.

The Washington Business Journal 2011 Book of Lists placed G&O as the 9th largest engineering firm (ranked by billings) in the Washington, D.C. metropolitan area.

South Florida Business Journal
Ranked G&O #16 in Top South Florida Engineering Firms.

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