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

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

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

This mine, which is also known as the Magword Antimony Mine, is situated about 30 miles easterly from Guyra. The geology and workings of the mine are discussed in this report.

On the 5th February, Mr. A. A. McLeod, General Superintendent of King Island Scheelite, N.L., telegraphed that it was desired to obtain further information about the ore structure to the north-east of cross-section line 13, and suggested the drilling of two diamond drill holes. Three possible sites and holes were discussed. In response to a request from Mr. McLeod, a visit was paid to the mine on the 26th and 27th ultimo, when returning from Mount Bischoff mine, Tasmania. The whole position regarding the above portion of the deposit and open cut were reconsidered, and problems regarding drilling further west on the northern side were also investigated. A short statement was prepared while at the mine which forms the basis of the remainder of this report.

Notes on the mica deposit, Hundred of Para Wirra, County of Adelaide, South Australia. Mineral resources and principle workings are described.

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

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

The Cobar mining field was examined between August, 1946 and June, 1947. Attention was concentrated on the operating mines, viz. New Occidental, New Cobar and Chesney. New Occidental Gold Mines, N.L. owns all three deposits and had requested assistance from the Commonwealth Government to search for new orebodies on their leases. It had previously been recognised that each of these orebodies lay close to a sharp contact between fine-grained and coarse-grained sediments. Of particular interest are the portions of the contact which have been subjected to minor folding, because, immediately to the south of these folds, fracturing favourable for ore localisation has developed. The geological examination was carried out in conjunction with the Geological Survey, Mines Department, New South Wales. Surface and detailed underground mapping were carried out. A preliminary magnetic survey of part of the field was carried out by the Geophysical Section during the first half of 1947. A special study of the New Cobar Mine and the plans of that deposit were made by Dallwitz, Fleischman and Ivanac. This report provides a comprehensive overview of the situation, topography, history, structural geology and general geology of the area. Detailed descriptions are given of the history, workings, orebodies, and structure of each individual deposit. Various accompanying plans of the mines and the Cobar mineral field are included.

A total of 16 rotary cored bores were sunk by the Bureau in Portions 14, 15, 16 and 17, Parish of Wallarah, Northumberland County, 5 miles south of Swansea. Approximately 1,100 ft. of "Test and Define" drilling proved a possible maximum of 960,000 tons of coal, or a minimum of 750,000 tons in the Wallarah Seam under an average overburden coal ratio 5:1. The overburden is mainly conglomerate. The geology of the area and mining are discussed in this report. The results of drilling are detailed in the accompanying plates, stratigraphic logs, and descriptive bore logs of the Swansea South area.