Daniel Marr & Son Company was established in 1898 and has played a major role in the development of the Boston skyline by providing high quality steel and precast concrete erection services to fabricators and general contractors. The professional standards upheld by the company have proven successful time after time: a cooperative team approach, quality performance, effective and timely resolution to project challenges and commitment to a safe working environment.

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Marr Crane & Rigging operates three lines of business: cranes, construction elevators and rigging with an equipment fleet that includes 22-ton to 300-ton cranes. The company employs fully-trained and experienced operators and signal persons. Rigging and installation of all types of equipment is a core service and we offer indoor/outdoor storage in three facilities.

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Marr Scaffolding Company provides the rental, sales and servicing of nationally marketed construction products and equipment. Marr Scaffolding operates through five divisions: Scaffold, Shoring, Aerial Lifts, Hydro Mobile Mast Climbers and Bleachers and Special Events. The company also operates a Contractor’s Safety and Supply Center that offers a local, on-the-spot resource for contractor supplies and safety items.

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Isaac Blair & Co., Inc. was established in 1820 and purchased by Daniel Marr & Son in 1969. The company provides specialty construction shoring and rigging services and has developed an unparalleled expertise in solving complex shoring and rigging challenges.

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The Marr Companies are resolute in their objective to encourage an efficient and productive effort that incorporates all elements of loss prevention. 

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Located at 423 Dorchester Avenue in Southie, Marr’s Contractor Safety and Supply stocks thousands of construction materials including a full line of fall protection, safety products, winter protection, and other specialty items.

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