The area tested by drilling comprises approximately 30 acres of the Parish of Cullen Bullen in the County of Roxburgh, and is immediately to the east of the Portland-Mudgee railway line about 1.5 miles northward from Cullen Bullen Station. The purpose of drilling was to test the Irondale and Lithgow seams of the Upper Coal-Measures for thickness and quality, and thus determine whether or not the more detailed investigation of proving is warranted. Seven holes, with an average depth of 116 feet, were drilled by Goldfields Diamond Drilling Co. under contract to the bureau of near sites chosen by the Geological Survey of N.S.W. The total footage drilled was 810 feet and coal-core recovery averaged 89%. Core drilling in the Tyldesley Area has indicated the presence of 41,000 tons of banded high-ash coal in the lower split of the Lithgow Seam. The coal is considered unsuitable for exploitation by open cut methods and a proving campaign is not recommended.

This statement sets out the results of drilling by the Bureau within Swansea Sub-area N.S.W. (J.B.C. plan BG-4). The area investigated comprises approximately 115 acres, about 2 miles south of the township of Swansea in the parish of Wallarah, Country Northumberland. In the Swansea area 'test and define' core drilling by the Bureau has indicated coal reserves of approximately 302,000 tons within the physical limits required for open cut exploitation. This total is made up of more than 87,000 tons in the "Open Cut Block" and 215,000 tons in the "West Block". Proving is recommended for the open cut Block and for the West Block, except that in the latter area the obstruction which will be offered to open cutting by the presence of the P.M.G. cable should be considered before proving is undertaken.

During 1951, Mr. E.P. George, a resident of Maldon, reported that he had discovered areas in the Maldon gold field which showed definite radioactivity on a portable Geiger counter. Samples submitted by him from time to time were tested in the laboratory, and showed slight radioactivity. Although the results gave no indication of the presence of a deposit of commercial value, the opportunity was taken of the presence of a geophysical field party in the Woodend district to pay a brief visit to Maldon, so that the activity present could be recorded on the Bureau's instruments. The party comprised two geophysicists, who spent half a day in the area.

Five core samples from the Ravensworth Bore were received for examination. These cores consisted of hard, dark grey, partly carbonaceous shale and the only fossils that could be examined were on the fractured surface of the samples. A detailed examination is given below.

This statement gives the results of a scout drilling campaign conducted by the Bureau at the Kirby's Hill Area of the Western Coalfield of New South Wales. The area investigated comprises approximately 200 acres of the parish of Cullen Bullen in the County of Roxburgh. At Kirby's Hill itself a maximum of about 300 feet of Coal Measure rocks rests on Upper Marine beds, and this is one of the most westerly exposures of the Upper Coal measures. The purpose of scout drilling was to determine the suitability of the Lithgow and Irondale Seams for open cut exploitation.

In December, 1950, the Pakistan Government filed a formal application to Australia, through the Technical Assistance to South-East Asia Co-operation Scheme, for three geologists to carry out geophysical surveys in Pakistan. In May 1951, the geologists, J.F. Ivanac and D.M. Traves of the Bureau of Mineral Resources and D. King of the South Australian Mines Department, arrived in Pakistan. Their instructions were to carry out a geological survey of a portion of the Gilgit Agency, and to discuss with the Director of the Pakistan Geological Survey or any other Government Officer familiar with the problem, the alluvial gold deposits of Chitral River and the lignite deposits of West Bengal and Sind. Field investigations commenced from Gilgit in June 1951, and the party spent four months in the region. This report gives an account of the visit and the results of the investigation.

This statement sets out the results of drilling in part of the Minmi Area, Newcastle District. The area covered by the drilling grid totals about 390 acres and includes parts of Portion 130, Ph. of Teralba and Portions 15 and 26, Ph. of Hexam. This statement refers to the western and central blocks of the area. Proximate analyses and calorific value determinations of the coal cores were made by the New South Wales Mines Department laboratory in Sydney. The analyses here quoted indicate a composition roughly equivalent to that which might be expected for cleaned or hand-picked coal from this area.

The writer spent four days in 1949 in the Adaminaby-Kiandra Area with J. Glover mapping the country north-north-east of the present Tunnel Line. In 1951 a fortnight more was spent on the Tunnel Lines themselves by the writer under the guidance of senior geologist D.C. Moye and geologists K. Sharp and C. Wood, who provided a large amount of information not yet available in written form. All sediments in the Tunnel Area are Ordovician, and in the case of the Tumut Pond beds an even older age is possible.

The work done in this investigation was for use in the compilation of a large scale geological map of the A.C.T. The area mapped adjoins that mapped by Flinter and McInnes (1949) and L.C. Noakes (1946). The map accompanying this report includes all of the A.C.T. south of an east-west line through Tharwa. Geological features, including the physiography, stratigraphy, and structural geology of the area, are described in this report.

This report contains notes on a gravity survey of the East Gippsland area, Victoria. The accompanying gravity map shows Bouguer Anomalies over the area in East Gippsland held as Petroleum Prospecting Leases by Lakes Oil Ltd. and Austral Oil N.L. The map is compiled chiefly from the survey by Robert H. Roy Co. U.S.A. and incorporates additional work carried out by the Bureau of Mineral Resources during 1951.