During an inspection of limestone deposits at White Rocks on 2/11/50, samples of weathered granite were collected from a quarry on the eastern side of the Queanbeyan-Cooma road, about 150 yards south of the two-mile peg. This quarry is in the Queanbeyan Clay Deposit described by W.G. Woolnough in departmental reports dated 17/2/28 and 20/6/28. If the rock can be economically crushed and worked, it may be suitable for the production of sewer-pipes and other impervious ware. The samples, reserves, and suitable uses for the granite are described in this report.

The area investigated, now commonly known as the Daly River Area, is situated on the north-eastern bank of the river, about 35 miles from the river mouth, and approximately 80 miles south of Darwin. The present survey was made in July 1950, in conjunction with work being done by the Bureau at Rum Jungle, and was a general investigation for possible radioactivity in the district. Although no radioactivity of interest was detected, it is considered desirable that the results of the investigation should be recorded. The geology of the area, field work, and results are described in this report.

This report describes the results of a micropalaeontological examination of rock samples from the lower Minilya area.

The following is a summarised account of an investigation into the heavy mineral content of thee bores (Nos. 2, 3, and 4), put down by the Roma Blocks Oil Company. The positions of the bores and a short account of the geology of the area are given, together with results of the work to date, and an evaluation of the prospects of correlation by petrological means.

This report describes the results of a micropalaeontological examination of samples, collected from bores nos. Z.18, T.29, HH.57, and PP.59, in the Moorlands Coalfields.

A sample of diatomite was submitted for palaeontological examination. The results are of the examination are recorded in this report.

This is the second progress report of the coal drilling programme near Ashford in the Parishes of Macdonald and Myall, County of Arrawatta. The first report (Record 1949/106) covered the drilling of D.D.H's 1-5. Drilling was continued to test the coal measures lying between old Ashford Colliery and the Severn River. Five more holes were drilled through the coal seam, north of No. 2 D.D.H. An account of the drilling work is set down in this report, together with a description of local geology, and estimates of the coal reserves in the field.

The discovery of the radioactive minerals carnotite and torbernite, in the vicinity of Rum jungle, was reported by Mr. Jack White on the 7th September 1949 in a letter to the Director of Mines, Alice Springs. Officers of the Department of Mines, Alice Springs confirmed his conclusions. The area was visited by J. Daly, J.F. Ivanac of the Bureau of Mineral Resources, and M. Sneddon of the Mines Department, Alice Springs late in September. They suggested that detailed geophysical and geological work should be carried out. H.J. Ward and G.F. Joklik made a detailed geological investigation in October and prepared a map which covers an area approximately half a mile by a quarter of a mile. A general reconnaissance of the country in the vicinity of Rum Jungle was also carried out. In conjunction with the geological work D.F. Dyson made a Geiger-Muller survey of the torbernite-carnotite deposit. An account of this investigation and its findings is set down in this report.

Consequent upon instructions received from the Superintending Geologist, Mr. C.J. Sullivan, the copper-gold deposit at Yeuralba was visited and inspected on the 9th, 10th, and 11th May, 1950. This geological report gives an overview of the inspection and its findings. The situation, history, workings, general geology, orebody, mineralisation, and production history of the deposit are briefly described.

Two methods are outlined in this report. The first, is a method intended for the determination of porosity of consolidated sediments. The method is applicable to those sediments included in rotary drill cores and hand specimens of rock collected in the field. The second, is a method intended for the determination of permeability. It is applicable to suitably sized samples of rocks and any other substances whose constitutions permit of their being treated by the procedure set out in this method, subject to their own inherent limitations relative to this method. This report provides a detailed description of each of these methods.