3. Swissvale - Bessemer

From Swissvale, milepost 344.5 (40.424728N79.886144W) the NS freight speed is 35 mph. The passenger speed is reduced to 40 mph at milepost 345 to milepost 342.1. The blue line is the NS line.

In comparison, the PRR allowed speeds varying from 50 to 40 to 50 mph within the sames points.

The manufacturing place under the place name of Bessemer  on the lower right is the United States Steel Edgar Thomson Works or steel mill.