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  • At least as early as 1940, it was realised by the Department of the Interior that the reserves of suitable rock (shale or slate) in the pit adjacent to the Canberra Brickworks were limited. A decision was made to find a temporary site to provide sufficient material to supply the brickworks for two years. A site at Deakin, 1700 yards by road east from the existing brickworks was selected and was recommended by Dr. W.G. Woolnough in 1940 as suitable, subject to testing by costeans and pits. A survey of the area in the subdivision of Deakin, Canberra City Area, was then arranged and was made during March and April, 1944, the object being to determine if there were sufficient reserves of suitable material to supply the Canberra brickworks for a period of not less than two years. This report describes the results of this survey.

  • Gibsonvale tin field is situated approximately three miles southeast of the village of Kikoira. This preliminary report was prepared following an examination of the tin field by the writer. Aspects of the general and economic geology of the field are discussed herein.

  • A brief report on the occurrence of beryl on Yinnietharra Station, Western Australia was prepared following a visit to the locality in December 1948. That report referred to three deposits: 1) 0.25 to 0.5 mile N.25°W. from The Cairn; 2)0.25 mile S.60°E from the Mica King mine; 3) Rowe's mine, 2 miles southeast from Morrissey Hill. The report stated that 20 or 30 tons of detrital beryl in large pieces could be picked from the surface with ease. It was pointed out that by collecting small pieces and wider search the immediately available tonnage might be doubled. In June 1944, the first two of the above deposits were again visited, as was one on Bidgemia Station not seen on the previous occasion.

  • Gypsum has been found in all the states of the Commonwealth, but, as far as known at present, deposits of commercial importance are limited to New South Wales, Victoria, South Australia and Western Australia. South Australia is the major producer and provides approximately 80 percent of the total Australian production. An account of gypsum deposits and occurrence by state is given in this report.

  • Results of a micro-faunal examination of samples from bores Nos. 188, 195, 208, and 213, parish of Maryvale, Victoria.

  • These investigations were carried out at the request of the Secretary for the Navy. The following report is intended to confirm provisional information made available to naval personnel during and at the conclusion of the surveys. The Fremantle Degaussing Range is situated in Gage Roads near Fremantle Harbour. The position of the coils forming shallow and deep ranges is shown in Fig. 1. Deperming operations were carried out in Careening Cove, Garden Island. The objects of the investigation were twofold. First, to determine the average normal values of the vertical (Z) and horizontal (H) force components of the Earth's magnetic field in that part of the harbour which would be occupied by a ship in passing over the coils, and second, to determine the average normal values of Z and H in the vicinity of Careening Cove, Garden Island.

  • This report is written primarily to present the determination of the permeability and porosity of a number of rocks and minerals, but it has also been considered advisable to give a brief description of the different kinds of apparatus designed and used in making the determinations. The materials on which the tests were carried out included a suite of specimens from No. 10 bore, Lakes Entrance, two specimens of sandstone from one of the bores at Roma, Queensland, and a number of Australian diatomites. The method of presentation adopted in this report is, firstly to describe the apparatuses used in making the determinations and the technique adopted in preparing the specimens for testing and secondly to discuss the results obtained for each set of specimens. In addition to the permeability and porosity tests already mentioned, a number of tests of compressive strength were made on wet and dry samples of glauconitic sandstone from Lakes Entrance.

  • This report summerises the kinds, sources, and handlers or processors of asbestos in Australia, 1944.

  • Results of micro-examination of samples from Bore No. 3825 on E.W. Langbien's property near Bourke, from 950 feet down to 1200 feet.

  • Red ochre of high quality has been produced from deposits in Ophthalmia Range since 1937. The bulk of the production has been derived from one lease, No. 37OH, the deposits on which are the subject of this report. The locality was visited in June, 1944. This reports comprises notes on access, topography, geology, economic geology, and production. A geological plan of the vicinty of the ochre deposits accompanies this report.