Atomic Weapons Research Establishment. Orford ... - English Heritage

a similar sign on the south door records ‘No.2A’. Within the passage at eaves height are fixing
plates on the west and east walls that probably mark the position of an overhead travelling crane
On the walls of the passage are a number of sealed magazine lights. To the west of the passage are
two self-contained barrel-vaulted storage bays, formerly closed by double wooden outward opening
doors, width 3.05m (10ft), height 3.63m (13ft). Entry to both the bays was over a toeboard,
batons and screw holes at the entrance mark their positions. Internally the south bay measures
7.45m (24ft 6ins) x 4.55m (15ft), height 5.12m (16ft 10ins), its floor is surfaced in grittless asphalt
and it is lit by two sealed florescent light units. It is ventilated to rear by a rectangular opening
sealed by a plywood unit covered in aluminium with four copper vents. It cost £29,000 The north
bay is larger and measures 9.15m (30ft) x 7.45m (24ft 6ins)with a height of 5.12m (16ft 10ins),
its floor is also covered by grittless asphalt and it was lit by four florescent lights, to the rear it was
vented by two rectangular vents with wooden covers. At some point there has been a fire in the
north bay. Above each of the internal storage bays is a vertical ventilation shaft capped by a metal
vent.
The two bays vent to a passage way to the west which is entered from the south through a single
wooden door, its entrance way revetted against the shingle traverse by concrete wing walls. Within
the passage way is a metal header tank, an electrical switch box and junction box, possibly for heaters.