Railway signallers and shunters
Μηχανοδηγοί και σιδηροδρομικοί
Machine Operators

Railway signallers and shunters control traffic on a stretch of line with signals and switches from a signal box, couple wagons to make up trains in yards and mines, and take charge of freight trains on the run. They also check the brakes before a train leaves.
Every department, for 12 months.