Though the Bellefonte Central had its roots serving the iron ore and furnace industry, it was limestone that sustained it for most of its life.
High calcium limestone deposits in Bald Eagle Mountain, on the north side of the Buffalo Run valley, were being tapped, with much of their production going to steel mills in Pittsburgh. These quarries, eventually consolidated under the management of the Chemical Lime Company, would replace the iron furnaces as the principal generators of traffic on the Bellefonte Central.
Track charts are linear records of segments of the railroad. They are "to scale". Although the schematic is linear, at the bottom of the chart is a depiction of the degree of curvature of the line, as well as grades.
Signal charts are very similar, but show where signal heads are located and what aspects they are capable of showing.