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Bluestone Manager2022-09-20 10:46:262022-09-20 10:46:26Johns Hopkins University – 555 Pennsylvania AvenueFeatured Projects
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Bluestone Manager2022-09-20 10:46:262022-09-20 10:46:26Johns Hopkins University – 555 Pennsylvania Avenue
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Bluestone Manager2022-03-23 08:43:382022-03-23 08:43:38Carnegie Mellon University – Scaife Hall of EngineeringNEWS
- Hatzel & Buehler and Bluestone Communications’ Employees Host a Thanksgiving Food DriveDecember 2, 2025 - 8:03 pm
- Hatzel & Buehler and Bluestone Communications Participate in Women in Construction WeekMarch 11, 2025 - 10:19 am
- Hatzel & Buehler and Bluestone Communications Receive the Highwire 2025 Gold Safety AwardMarch 7, 2025 - 9:42 am




Blue Sky Controls acquires the assets of T.R. Ricotta Electric, Inc.
Blue Sky Controls, a division of Hatzel & Buehler, Inc., is pleased to announce that it has acquired the assets of T.R. Ricotta Electric, Inc. Ricotta was founded in 1985 by Thomas Ricotta who, along with Bob Finn, has grown the company to become a leading controls contractor in New York City, successfully completing a variety of projects with a number of well-known clients, including work at Penn Station, Hudson Yards, and the World Trade Center.
Bluestone Communications Branch Offices Receive NECA’s Zero Injury Award
Baltimore Branch Office awarded contract at Medstar Georgetown University Hospital
Bluestone Communications was awarded and has begun construction on the MedStar Georgetown University Hospital’s new medical/surgical facility. The 800,000+ square foot facility will provide 156 patient rooms, 32 operating rooms, rooftop helipad and a new emergency department.
Hatzel & Buehler Announces Acquisition Of Devon Electric, Inc.
Hatzel & Buehler is proud to announce the acquisition of Devon Electric, Inc. – a full service electrical contractor specializing in the installation of Building Automation Systems (BAS). Based in Malvern, Pennsylvania, Devon Electric is a family-owned business run by Beth and TJ Fay. Founded in 1985, Devon Electric has grown to become one of the […]
Bluestone Communications acquires Beech Tree Networks, Inc.
Bluestone Communications, Inc. – a wholly owned subsidiary of Hatzel & Buehler, Inc. – is pleased to announce that it has acquired certain assets and contracts of Beech Tree Networks, Inc. Founded in 2002, Beech Tree Networks offered a wide variety of communication services such as copper and fiber optic structured cabling solutions, wireless solutions, […]