The area investigated lies on the outskirts of Kotara, a suburb in the S.W. of Newcastle. The coal of interest is in the Burwood Seam. Drilling, field work, and surveying were carried out in the area. These operations are described in this report. Drilling results are discussed.

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 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.

The presence of quartz crystals in the dump of an old gold mine, known as Black Charlie's mine, in the Strathbogie Ranges led to the reopening of part of the workings in the search for crystal suitable for piezo-electric applications. To date the search has met with success, and has resulted in the discovery of a second crystal deposit adjacent to the old workings. The mine which is now named the Crystal King mine was visited in December, 1944. The locality, topography, geology, economic geology, and production of the mine are discussed in this report. A sketch section of the mine is included.

The mine is situated on Black Andrew Mountain about 4 miles south of the wall of Burrinjuck Dam and in the parishes of Goodradigbee and Childowla. Surface features were mapped by C.H. Zelman and H.B. Owen in November, 1942 by stadia alidade and planetable, and underground mapping was brought up to date by F. Canavan and H.B. Owen on 20th March, 1944 using tape, alidade and clinometer. This report details the production history, general geology, and economic geology of the Black Andrew mine.

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

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 Cobar field was visited during the period 18th to 24th July, mainly in connection with the exploration programme which is taking place in that area. During this visit, however, some information was obtained concerning the operations of the mines controlled by New Occidental Gold Mines, N.L., which company is being assisted financially by the Commonwealth. Estimated operational costs, grade, and production figures are given. The development, exploration, and future of the field are discussed.

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.

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