Perrin Coal opens switch checks, arrival cards and the outgoing crew’s handoff note at the rail switch at Blackglass Junction. Before anyone changes a mark, the crew checks a relief worker uses a different mark from the full-time switch crew. The cooling weeks period sets the pace of the work.
The page holds 20 departures with a signed signal check before the next crew arrives. Perrin Coal reads the preceding count, 21, before the next line is entered. A number without a date would not tell the next crew what changed.
The rail board accepts both marks. Carriers want the name and time attached to each one. Here the difference is visible between the posted rule and the route, service or shift just beyond the door.
An inspector checks the recorded condition at the work site. The Year first, cooling weeks window 1 file remains open for its scheduled decision. The junction will test a shared handoff card with a named operator field.
The shift closes with the source page attached to the board. The next file uses a new date and scope.
