Document ID: chunk:federal_register_of_legislation:F2015L00160:body:0:p9
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old. The old buildings fell into disrepair and a dozen of them were removed in 1998.
More recently the AANBUS suite of buildings has been supplemented by two buildings assembled from pre-modified 20' shipping containers mounted on concrete footings – the Field Store and the ARPANSA Building which houses equipment to monitor international compliance with the Comprehensive Nuclear-Test-Ban Treaty.

2.3 Extant old structures
This plan focuses on the management of the heritage values of the old station (pre-AANBUS) structures (Figure 2). A summary of the different types of pre-AANBUS buildings is provided at Table 1. Of these structures, the following are located in the central precinct.

Electricians' Workshop
The Electricians' workshop is a 1954-built 7.3 m x 3.6 m aluminium panelled, flat-roofed PTB Mark III building constructed on railway sleepers on bedrock. The building has several small rooms: a cold porch, office, workshop and store. The building's internal fixtures include wooden platforms along two walls, and metal brackets for internal support. Its triple-glazed perspex windows have been blocked up.
The Electrician's Workshop has been used or known as the works hut, radio office and post office.

Biscoe (Old Living Quarters)
Biscoe is a 7.9 m x 7.9 m pitched-roof hut made by the Norsk Polar Institute and shipped to the station in 1954. It is made of pre-cut timber, sheeted with external timber boards and lined with masonite. It was later connected to Weddell by a 5 m annex.
Biscoe has also been used or known as the drying room, brewery, workshop, store, dog hospital, sewing room, laundry and carpenter's shop.

Weddell (Old Carpenter's Workshop – 'Chippies')
Weddell is a 7.3 m x 3.6 m pitched-roof PTB Mark I building originally erected on Heard Island in 1950. It has four windows and has built in work benches still remaining. It was shipped to Mawson in 1955 for use as sleeping quarters. It sits on sleeper and bedrock foundations and is made of plywood-skinned panels attached to a pre-cut timber frame. The annex joining it to Biscoe contained a laundry and an alcove in which timber was stored on racks. For many years husky pups were born and housed there.
Weddell has also been known or used as a sleeping hut, recreation hut (from 1961) and hobby shop (from 1984).

Old Surgery
The Old Surgery is a 1964 PTB building measuring 11.8 m x 4 m. The foundations comprise scaffold set into bedrock. It is clad with zincanneal panels. The fitting out of the interior was completed in 1965 and the building extended in 1969.
It is currently heated and used as an overflow plumber's workshop and contains equipment for cutting sheet metal.

Magnetic Absolute Hut
The Magnetic Absolute Hut is