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Massachusetts Port Authority (Massport) is the port authority for the Commonwealth of Massachusetts.It owns and operates three airports, Logan International Airport, Hanscom Field, and Worcester Regional Airport, and public terminals in the Port of Boston.
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.