Blisworth of Blisworth Junction on the line to Towcester. The ore was taken to Scunthorpe and South Wales for smelting. A few traces of all of these quarries remain mainly in the form of depressed field levels and some buildings connected with the later quarry. Lastly another limestone quarry was opened near Rectory Farm west of the Towcester Road to provide stone for use in connection with construction of the M1 motorway. This remains and is now a nature reserve. Blisworth Blisworth is a village and civil parish in the South Northamptonshire district of Northamptonshire, England. The West Coast Main Line,
Pennsylvania Canal Tunnel Pennsylvania Canal Tunnel The Pennsylvania Canal Tunnel was the Pittsburgh terminus of the Pennsylvania Main Line of Public Works, a transportation system that involved other early tunnels. Construction was authorized February 8, 1827, and the tunnel was completed November 10, 1829. The canal crossed the Allegheny River on a covered bridge aqueduct, later replaced by John A. Roebling's first suspension bridge, the Allegheny Aqueduct., the canal traveled underground through most of downtown Pittsburgh, under Grant's Hill, to end in a lock leading to the Monongahela River. The original plan was to connect with the C&O canal at the Monongahela River,