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  • This report covers the plane table survey work carried out from December, 1947, to February, 1948, on the ridge running N.W. from the U.S.A. Legation, and from Brick Trig. Station to the Brick Works. The stratigraphy, soil, structure, and topography of the area are discussed in the report.

  • In 1943, an investigation was carried out on portions of the Latrobe Valley Brown Coalfield, using the electrical resistivity method, to see whether or not this method could prove useful in determining the depth to coal. At this time, the possibility of a gravity survey was discussed, and in January, 1948, gravity tests were commenced using a Humble-Truman gravimeter. Later, a substantial number of the readings were repeated with a more modern type of gravity meter, and a few new stations established. The results were subjected to a preliminary investigation soon after the completion of field work, but it was evident that a much more detailed study would be required before an interpretation could be completed. Prior to these tests, discussions took place between technical officers with a view to selecting an area for testing on which the results could be related to some of the known geological structures, and, subsequently, an area was selected in the Parish of Hazelwood for this purpose. The geology of the area, survey method, and results are discussed in this report. Accompanying geological plans are included.

  • In the present report it is sought to explain a number of points, including, in particular, to give an explanation as to why the Company now estimates that its annual loss would be £169,000 per annum as against an estimate of £100,000 per annum, given in the statement issued by the Chamber of Mines. Information is also given in this report concerning the present ore reserve position which is closely bound up with the proposed development program.

  • This report describes the results of a micropalaeontological examination of thirty-one rock samples collected from the Andamooka and Coober Pedy opal fields.

  • This report describes the results of a micropalaeontological examination of samples taken from a depth of 0 to 922 feet down.

  • Following the recommendations of an earlier investigation, a visit was arranged in June, 1947, to inspect the deposits near Hampton, at Toowoomba, and in the South Burnett District. As a result of this inspection it was decided to start a testing campaign on Portion 194v, Wooroolin and to follow this work by testing in the vicinity of Portion 206v. The method to be employed and scope of any further work was to be modified in the light of experience gained at the first two areas, called Kingaroy No. 1 and Kingaroy No. 2 respectively. The geology of the area, methods of testing, and the nature of the laterite are described in this report. A comparison of the results of searches by the Queensland Geological Survey and by the Australian Aluminium Production Company is given. Accompanying plans are included.

  • The present report gives a detailed description of all samples received from Frome-Broken Hill Co. Pty. Ltd., together with some stratigraphical notes. A preliminary report on a selection of these samples (1947/076) was submitted in December, 1947.

  • At the request of the South Australian Government a gravity survey to investigate the possibility of further coal basins to the north of the Leigh Creek coalfield was commenced by officers of this Bureau in October, 1947. This survey was suspended in December, and a report was prepared dealing with the work carried out to that date (1948/004 and 1948/048). The area covered, however, was only a small part of a much larger area covered by a superficial layer of Tertiary rocks, beneath which a coal basin could exist. The work was resumed in May, 1948, and was continued until September, when the party was withdrawn. In additional to the geophysical field work carried out on the covered area to the north of the known coal deposits, some work was done on the Center or Telford basin. A number of traverses was read on the western edge of the basin, with a view to determining places where shallow coal might be found. The geology of the area, technical matters, results, and recommendations are discussed in this report. Accompanying plans are included.

  • Brief description of limestone from a locality half a mile north of Cape Leeuwin Lighthouse.

  • This report describes the results of a micropalaeontological examination of eight rock samples from Mount Canaway.