This was the first study of its kind, by the Commonwealth team. The study included demonstrations of the dithizone tests for traces of some heavy metals in the field environment, of operational and sampling procedures, and geochemical reconnaissance. Several reconnaissance traverses were sampled and examined. Extractable forms of copper and, in a very presumptive manner, extractable forms of lead and zinc were sought in the test materials. In addition, tests for copper, lead and zinc were made in some ignited and fused specimens. The testing procedure and results are described in this report.

This report deals with the application of geophysical methods (other than radiometric) to the Coronation Hill Radioactive Deposit. Results of radiometric gridding of the surface and costeans, field sludge assays, and radiometric drill hole logging are not treated as these are included in entirety in R.B. Allen's report "The Coronation Hill Uranium Prospect," Bureau of Mineral Resources Record 1954/17. Structural indications from magnetic evidence are discussed. These comprise several faults, or zones of weakness, one of which may coincide with the axis of the surface radio-activity. Several interesting magnetic features for which no cause can be proposed are also noted. The highly uncertain nature of the deductions made is emphasised. The method of approach to geophysical applications at Coronation Hill is detailed, and recommendations are made for possible future work.

Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to June, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and development work are summarised.

Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to July, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and development work are summarised.

Self-potential and magnetic surveys made in the vicinity of the Mount Cleveland Tin Mine, near Waratah, Tasmania, are described and discussed. The first survey, which is described in Part I of this report, was made in April and May, 1953, at the request of the Department of Mines, Tasmania. The object of the survey was to ascertain whether geophysical methods could detect the known area of mineralisation and, if so, whether any additional areas of mineralisation could be discovered. Results of the first survey show that the geophysical anomalies, particularly the self-potential ones, coincide with the old mine workings. The anomalies over Luck's and Hall's workings, however, cover larger areas than the actual mine workings, thus indicating that further sulphide mineralisation may exist beyond these old workings. Anomalies not related to the old workings appear in an area north-west of Deep Creek, between traverses O and R. Both self-potential and magnetic methods revealed anomalies along these traverses between 350.E and 650.E, where geological investigation has also shown mineralisation to exist. Based on the results of the first survey, the grid was extended and surveyed to the north-east and south-west in March and April, 1954. This second survey, which is described in Part 2 of the report, shows that the anomaly connected with Henry's workings does not extend to the north-east, but terminates sharply between traverses P and Q. Some additional anomalies were recorded in the north-eastern extension of the grid, but in the south-western extension there was no geophysical evidence of mineralisation. It is suggested that further mining exploration work should be concentrated mainly near the former mine workings and in the area to the north-west of Deep Creek, between traverses O and R. Some prospecting trenches should also be put down to test the minor anomalies in the north-eastern part of the area.

In the course of geological investigation of the area included in the Katherine, Mt. Todd and Lewin Springs 1-miles sheets, carried out by J.H. Rattigan and A.B. Clark, Bureau of Mineral Resources, A.B. Clark found, in September 1953, uranium mineralization subsequently known as the A.B.C. Prospect, 11 miles north-north-east of the township of Katherine. This report is a record of the detailed investigation which followed the discovery.

The Ella Creek Prospect was a first order anomaly discovered by the Bureau of Mineral Resources airborne scintillometer survey in 1952. After a detailed examination by geologists and geophysicists, accompanied by intensive costeaning it was considered promising enough to warrant drilling. The three holes drilled were probed radio-metrically and high counts ranging from 1,000 to 3,000 per minute were obtained. No primary uranium mineralisation was encountered, and it is suggested that the source of the radioactivity, on chemical testing, may prove to be thorium.

Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to March, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and field work are summarised.

Operations of the Radioactive Section have been restricted during this quarter due to the "wet" season and lack of staff. Drilling operations at the Ella Creek Prospect were completed and operations commenced at the Edith River Prospect. No encouraging results were disclosed at either prospect. Other work has been limited to inspection of reported new discoveries and geophysical work in the Rum Jungle area.

Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to April, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and field work are summarised.