In August, 1947 the Bureau was requested by the Clifton Brick and Tile Company to carry out vibration tests on that Company's brick pit at Preston, Victoria. Tests were carried out at the brick pit on December 17th, 1947 and February 2nd, 1948 by officers of the Bureau. Six charges of explosives were detonated at different points in the brick pit and the amplitude of the ground movement was recorded. Additional records were made of ground movement due to other causes, such as vehicular traffic on a public road-way adjacent to the brick pit. It is the purpose of this report to summarise the results of the tests by tabulating the vertical ground movement recorded and to compare one with another, the amplitude due to different causes.

A site for a National Park Reserve is proposed at the head of the Tidbinbilla River, and a Zoological Park is planned, within the city limits, between Yarralumla Nursery and the Molonglo River. The Department of the Interior has requested geological information on these sites with special reference to supply of building stone. The geology of the proposed sites is described in this report. Possible sources of building stone in the vicinity of these sites are considered.

An investigation into the possibility of providing additional water supplies to the township of Tennant Creek was carried out by the Department of Works and Housing. A request was made to the Bureau in March, 1947, to carry out a geological examination of possible dam sites in the Tennant Creek area. A preliminary inspection of two possible sites was made on 5th June, and a detailed plane table survey of both sites was carried out on 6th and 7th July, 1947. The location, access, topography, general geology, engineering geology, and recommendations for future investigation and work are discussed in this report.

The geophysical survey described in this report was undertaken at the request of the Snowy Mountains Authority for the purpose of investigating possible sites for the proposed Spencer's Creek dam. The area surveyed is about two miles above the junction of Spencer's Creek with the Snowy River, about six miles east of the summit of Mt. Kosciuszko, and at an average elevation of about 5,700 feet above sea level. The specific information sought by the survey comprised the following: depth and nature of the bedrock, contours of the bedrock surface, nature of the overburden, and in particular, variations in physical properties occurring either horizontally or vertically. The seismic refraction method was used in the survey. This report gives an account of the geophysical survey and its results.

The dataset contains the spatial locations, in point format, of Australia's major international, domestic and regional airport terminals.

The datasets contain spatial locations in point format as a representation of embassies, high commissions and consulate facilities/missions in Australia.

The possibility of diverting the Upper Snowy River to provide water for irrigation has been a subject of discussion since 1884. The Snowy Mountains Hydro-Electric Authority was constituted in 1949. As the body responsible for the detailed investigation of the geology of the area it was thought desirable to publish the geological work which has been done in the Snowy Mountains region. With the authority of the Under-Secretary of the Department of Mines, New South Wales, the reports by members of the Geological Survey of New South Wales are included together with reports by geologists of the Commonwealth Bureau of Mineral Resources, Geology and Geophysics. Reports included in this publications are: "Geology - Jindabyne to Murrumbidgee River", "Reconnaissance Survey of Dam Site at Geehi, Swampy Plain River, N.S.W", "Geological Reconnaissance of the Proposed Hydro-Electric Works in the Kosciusko Area", "Geological Reconnaissance - Eucumbene River to Tumut River", and "Geological Reconnaissance - Murrumbidgee - Tumut Area".

A brief account is given of the history of the Magnetic and Seismological Observatories up to the time when the author landed on Heard Island in February 1952. This account is followed by a detailed description of all work done in connection with the operation and maintenance of the Observatories up to February 1953. Appended are: (1) The absolute values of the magnetic elements as observed during the period from 12th March, 1952 to 29th January, 1953; (2) The observed station differences for the magnetic elements; (3) Preliminary analysis of teleseisms and list of icefalls recorded; (4) Absolute gravity values as determined at Heard and Kerguelen Islands.

In response to the proposal for a new administrative building to be erected, 1/4 mile east of Parliament House, nine test pits were put down by the Department of the Interior for the purpose of examining the sub-surface conditions. Four of the pits were used for engineering tests of the bearing power of the rock foundations. The geology of the site is discussed in this report.

The Commonwealth Flax Production Committee conducts a flax mill at Ballarat. The flax is first treated with water and 25,000 gallons per day are used in the process. After the treatment, the water is allowed to run to waste, and is at present being conducted through an earthen drain to natural drainage channels. This disposal of effluent water is not approved by the Ballarat Council, and other means of disposal have to be found. The objective of the present investigation was to determine if another borehole could be suitably sited to dispose of the effluent. The geology of the area, possibilities of disposal, and recommendations are discussed in this report. Two accompanying plates are included.