Had to travel with the family to Cumberland County today. Instead of going shopping. I decided to kill some time checking out Fries Mill. There were freshly posted WMA signs and a red colored sign in the middle of the tracks right before the train would need to cross the Manumuskim River. Does the train not run through here anymore? While walking along the tracks I noticed they have replaced a lot of ties. There is also a pile of cross tees with insulators from on top of the power poles. My question is, the middle insulator is on a pivot and linkage. Does anyone know the reason for this system? The tag says Electric Power Equipment Corporation, Philadelphia PA. It listed amps as 400 and volts as 23-S?