Channel leading to the tunnel intake building which is visible in the distance; looking west (1989)
Tunnel intake building, looking southwest. The winches for the trash racks, sheltered by a wood-frame structure with a gable roof, are to the left (1989)
Tunnel intake building, looking northeast (1989)
View, looking north, of winches which drive the trash racks (1989)
Tunnel intake building, looking northeast. Detail of electric motor and gears which raise and lower the valve covering the entrance to the tunnel (1989)