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  • Ten days were spent in examination of the property, from July 8th to 18th. All accessible underground workings were mapped in detail on a scale of 30 feet to 1 inch and the surface in the immediate vicinity of the mine on the scale of 100 feet to 1 inch. Mr. J.W. Whiting of the New South Wales Geological Survey provided competent assistance during the surface and part of the underground mapping. Mr W.P. Green of Zinc Corporation Limited and his assistants did everything possible to facilitate the examination of the workings. Plans which have been prepared to accompany this report comprise: Surface plan, Plate 1, plans of all levels and of intermediate stopes, Plates 2-8, east-west cross-sections through the lode at 50 feet intervals, Plates 9 to 13, a longitudinal projection of the lode showing the distribution of mineralisation, and a longitudinal section outlining the amount of stoping which has been done, Plates 14 & 15.

  • Car traverses were made in several directions over an area of 30 miles square with Coorabin as a centre, with the object of delimiting, if possible, the margins of the coal basin. The results of the geological survey are summarised herein.

  • Two days, November, 10th and 11th, were spent in the Hillgrove area and brief examinations were made of the North Cosmopolitan, Garibaldi, Metz Black Lode, and Damifino Mines, as well as the surface of Eleanora, Freshold, Baker's Creek and other formerly worked lodes. The Black Lode on the Metz side is being worked for antimony, and J. Usher's scheelite mine is in continuous production. Development is proceeding on the North Cosmopolitan and Garibaldi antimony mines, and a little gouging is being done in the Swamp Creek and Baker's Creek gorges.

  • An overview of the types, occurrence, supply and production of asbestos in Australia, 1942.

  • This report is based entirely on the following typewritten report obtained from the Mines Department of Tasmania: Scott, J.B. 'Report on Mineral Leases 79 P/M, 30 P/M, 82 P/M, 83 P/M, 78 P/M, 71 P/M, 64 P/M, 65 P/M, 66 P/M, and 107 P/M, King Island, chartered in the name of the Sea Elephant Prospecting Association, 6th December, 1926'. The Sea Elephant tin deposit is situated about five miles west from the Sea Elephant Bay on the east coast, and 16 miles by road from Currie, the chief port on the west coast. The deposit consists of sand and clay overlying tin-bearing drift. A detailed account of the deposit is provided in this report.

  • Boring by the Alice Springs Works Department and by Webb Bros. of Mt. Riddock Station showed that subterranean water supplies in the schists and gneisses in this area are usually small in quantity and that the water is brackish. The best chances of obtaining water for the mining fields seems to lie in sinking relatively shallow wells on the creeks and depressions running northward from the Harts Range. These depressions are believed to contain from 30 to 60 ft. of alluvium. Eight possible sites for wells were selected, two being within the foothills of the main range and six at a distance of 1.5 to 2 miles from the foothills of the range. Six of these sites are now being tested by a light hand-boring plant. This plant is expected to penetrate the alluvium quickly and wells will be sunk where favourable results are obtained. The sites selected are within easy reach of the following mines: Jenkins' Mine, The Spotted Tiger Mine, B. Rech's (Rex?) Mine, Hit and Miss Mine, Central Mine and Eldorado Mine.

  • The mica used in modern aircraft sparking plugs, of which the attached section is representative, serves a triple purpose, viz: (a) Insulation of the electric current; (b) Protection of the insulating layers from heat; (c) As an effective seal against gas leakage. The use of mica in the construction and manufacture of aero engine sparking plugs is decribed herein.

  • A preliminary report on these samples was forwarded on 19/2/'42, the final report being delayed until the results of a mineralogical examination of two rock types, prominent in samples from 1542 feet down to 1549 feet was available. The results of this examination are now available.

  • The Pink Lakes, also known as Linga Lakes, lie in the Parish of Mamengoroock, Country of Weeah, in north-western Victoria, about 10 miles north-north-east of the small town of Underbool on the Ouyen to Pinnaroo railway (See Fig. 1). The three lakes known as the Pink Lakes that are being worked for salt are Sailor Lake, Lake Crosby and Crescent or Home Lake. The areas of the salt leases are: Sailor Lake leases, 206 acres; Lake Crosby leases, 395 acres; Crescent Lake leases, 311 acres. Portions of the above areas are occupied by the beaches and fore-shores of the lakes, and the total potential salt-bearing surface of the three lakes is actually about 700 acres. In addition to the Pink Lakes above-mentioned there are in the vicinity two other salt lakes viz: (a) Lake Poulton, about 70 acres in area, and two miles west of Lake Crosby, and (b) an un-named lake, here referred to as 'School' Lake, probably rather less than 50 acres in area and situated one mile south of the west end of Crescent Lake. Salt is formed on both these lakes, but Lake Poulton is somewhat difficult of access on the north-east and north, and School Lake is in a Government Reserve and is not available for leasing. The geology and salt resources of the Lakes are outlined. Several proposals, put forward with a view to increasing the yield of salt from Pink Lakes, are discussed herein.

  • The Nelson Bore, which is still in progress and is being drilled with the Commonwealth Rotary plant in collaboration with the Victorian Mines Department, has now reached the depth of 3746 feet, with no indication that the basement rock will soon be reached. Unfortunately no bore in Western Victoria or south-eastern South Australia has been drilled to bedrock, consequently no suggestion can be made as to the possible depth at which it will be met in the present bore. The deepest bore in the area to be palaeontologically examined is Knight's Dome, No. 2, Mt. Gambier, South Australia, which reached the depth of 2013 feet, drilling ceasing in carbonaceous sands.