A switch heater may be little more than a heavy duty pilot light, but these silent, hardworking blue-flamed sentinels protect the interlocking at CP-Bethlehem winter after winter, as reliably today as the day they were installed decades ago.
All those shots of interesting railroad details, what you see trackside, up close and personal! Excludes shots going into my other albums: "Engine Details," "Signal Details," and "Switchstand Shots."