The Berkshire Eagle reports Pan Am Railways, which owns the Hoosac Tunnel and runs freight traffic through North Adams, is for sale, according to railway industry publications.

That system passes through North Adams on its way through northern Berkshire County and provides freight service to several local businesses, including Specialty Minerals in Adams.

The company, rebranded as Pan Am Railways in 2006, is based in Billerica. It incorporates the former Boston & Maine and Maine Central railroads.