This report comprises notes on the geology, ores reserves, and exploration of the Maude and Yellow Girl Gold Mining Company.

Prospectors J.C. Paul and T.C. Ash claimed to have discovered wolfram near Lake Koolymilka in the area reserved for the Long Range Weapons project. The general geology and working of the area are briefly outlined in this report, and it is shown that no wolfram or any other minerals of economic importance are present.

The Mosquito Creek Wolfram Field was visited on 6th and 7th October, 1951. This report gives a brief account of the inspection. The general geology of the area, the ore-bearing reefs, and the mining leases inspected, are described.

Geological investigation by the Bureau commenced late in July, 1948, and continued until the end of October of that year. The objects of the survey were to lay the foundation for future detailed studies of the mining field, to study the factors controlling ore localization, to assess the quantity and value of ore exposed to date, and to estimate the potential value of the field. In the search for orebodies, a knowledge of the geological factors can be of great assistance, and it is felt that the information given in this report and in the accompanying plans should be of considerable help in this respect. However, the prospector's methods - loaming, dollying, panning etc. are still quite fundamental to success in a prospecting field such as Tennant Creek and the suggestions made in this report are intended to supplement this type of work. The climate, topography, vegetation, gold production, general geology, and gold deposits of the area are described in this report. Detailed descriptions are given of the individual mines examined to date.

The occurrence of radioactive minerals with cobaltiferous deposits in the Carcoar area has been known since 1894, but until recently they have not received much attention. The present geological survey has been carried out following the discovery of three rather significant radioactive anomalies in the north-eastern part of the mined area, during radiometric surveys in 1950 and 1951. The geological survey has shown that the cobaltiferous-uranium deposits occur in strong north-south shears in an area of Silurian slates and volcanic rocks intruded by diorite sills and dykes, close to the south-eastern boundary of a large mass of hornblende diorite. Opportunities occur for the discovery of other uranium deposits in parallel shears outside the area, in which radioactive anomalies have already been found. This report gives a detailed account of the geological survey. Geology, geological structure, the workings, deposits, and mineralization are discussed, and recommendations are made for future testing and surveying of the area.

Geological investigations, survey work, and mapping were carried out in the vicinity of the Tennant Creek gold field between 1948 and 1950. This report provides an overview of the investigations carried out on the Enterprise, Patties, and Eldorado mines. The working, production history, and geological features of these areas are discussed.

The enquiry into this mine resulted from an application by the company for a loan from the Commonwealth to carry out exploration and development. The Tindalls Gold Mine has not been examined by the Bureau and unless this is done no definite statement about the ore possibilities of the property can be made. However, from past reports it seems likely that the deposit has a chance of producing a large tonnage of ore. Under present conditions and with the mining methods now employed, it is extremely doubtful whether ore of this grade could be mined at a profit. The ore reserves, mining, milling, costs, and general financial outlook with respect to the mine are discussed in this report.

Summary report on the ore prospects of some Western Australian gold mines. The report provides details on production, ore deposits, and operations.

In accordance with instructions an inspection was made of the Blue Spec Mine, Nullagine, from 22nd to 27th October. A survey was made of development work since Mr. Sullivan's visit on 20th September. This entailed a survey of the 3 level drives off No. 2E. and No. 2W. winzes and the new cross-cut from the main shaft at No. 3 level. The new shaft and cross-cut on M.L. 266 were mapped and the lode was sampled and assay results obtained. The water supply problem was investigated and a site chosen for a new domestic supply bore. Three accompanying plans are included.

Report on mine maintenance, costs, equipment, employment, reserves, and workings.