Note on production, efficiency factors, and costs of twelve West Australian gold mines. Figures are provided for each mine respectively. A table showing mining and cost statistics is appended.

The relevant portions of letters from Non-Metallics Limited addressed to Mr. J.M. Newman, setting out the reasons for their Application for a Commonwealth Grant, and the details of the Company's position are reproduced here.

The object of this tour was to study ore deposits and methods of exploration in Africa and North America as well as to attend, as Official Delegate of the Commonwealth of Australia, the 19th International Geological Congress held at Algiers in September, 1952. A considerable amount of information was gained concerning ore deposits in the countries visited and this information should be of assistance in the search for further metal deposits in Australia. At the international Congress useful work was achieved and contact was made with a large number of geologists in various parts of the world. These contacts will facilitate the exchange of information between Australia and foreign geologists. The itinerary followed the attached as an Appendix to this report.

In January 1949 a brief examination was made of the area bounded by the Port Moresby - Rouna Road, the Rigo Road and the coastline between Port Moresby and Bogora Inlet, with the object of determining whether supplies of water and raw materials for the manufacture of cement were available. Possible quarry sites were chosen and specimens of the likely raw clay materials, of the limestone at Boatless Inlet, of reef limestone and limestone from the Main Road (or "Nine Mile") Quarry collected. Fourteen of these specimens are being analysed for silica, alumina, lime, iron, magnesia, carbon dioxide and water and total alkalies. As the suitability of the various raw materials examined depends largely on their chemical composition, this report must be regarded as only a preliminary one until these results are received. In this report the availability of raw materials and the general geology of the area are discussed, and a description given of the deposits of raw materials examined in the course of the visit.

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.

Notes on beach sand workings by company at September 1st, 1945.

Attention was directed to the inadequacy of supplies of acid grade fluorspar in Australia when the Bureau of Mineral Resources was asked to sponsor an application to import a quantity from England in 1948. The British Ministry of Supply released a proportion of the amount required but advised that the supply position in England was not secure and only limited quantities could be released for export in the future. The Ministry suggested that if known Australian requirements were likely to be heavy, some material might be supplied as a matter of urgency. An investigation of the fluorspar industry in Australia was then undertaken to estimate future requirements and the extent to which these could be met from domestic sources; the results of this investigation are the subject of this report. The uses, grading, consumption, supply, prices, and projected future supplies of fluorspar are discussed.

The Australian Resource Reviews are periodic national assessments of individual mineral commodities. The reviews include evaluations of short-term and long-term trends for each mineral resource, world rankings, production data, significant exploration results and an overview of mining industry developments.

Report on mine maintenance, costs, equipment, employment, and resources.

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