Subterranean U.S. Capitol Visitor Center Opens, Featuring Unique HVAC System Challenges CAPITOL VISITOR CENTER - WASHINGTON, D.C. PROJECT PROFILE Engineering Design & Specification: James Posey Associates, Inc. - Baltimore, Md. Insulation Contractor: Advanced Specialty Contractors - Elkridge, Md. Insulation Distributor/ Fabricator: Specialty Products and Insulation Co. - Lancaster, Pa. For more than two centuries, the U.S. Capit

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