The Indooroopilly Silver Mine is a historic silver mine at Indooroopilly, Brisbane, Australia
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The Indooroopilly Silver Mine is a historic silver mine at Indooroopilly, Brisbane, Australia
In 1918, G. Olsen and his neighbour, Patrick J. Madden discovered silver-lead traces on Mr Olsen's land at Finney's Hill, [1] Indooroopilly, a suburb of Brisbane, Queensland, 10 km from the city centre. After some promising excavations all over the property approximately 200 feet above sea level, a mineral lease was granted to them [2] and the first ore recovered from the site was dispatched to Cockle Creek, N.S.W. for smelting. [3]
The success of this led to the construction of an underground shaft to commence open-cut mining of the site in 1919. A number of leases were taken out on the property and adjacent land. [3] A year later geophysical prospecting was undertaken, the first record of such a survey being undertaken in Queensland. [3]
In 1921, a larger shaft was sunk to recover ore and a small treatment plant was erected in 1924 to facilitate work there. Mining continued with P.J. Madden purchasing the property outright. The existing house on the land, Fernbrook, built by architect, George Addison was demolished. [4]
By 1929, the mine ceased operations, due to poor metal prices worldwide and the exhaustion of the higher grade reserve. Total production for the period 1919-1929 had been 227, 343 oz of silver and 1,795 tonnes of lead. [2]
Over the next two decades, the mine remained closed. Shafts and tunnels collapsed as timber rotted, and the land was susceptible to flooding from the Brisbane River. The University of Queensland leased the site in 1951, totalling 6 hectares for its Department of Mining. The property was owned by Brisbane City Council, who sold it to the Queensland government. In 1956, the state government provided to mine site to the University granting it permanent and exclusive surface and underground rights. [5]
The open-cut and underground workings resumed, offering the University an opportunity to manage it as a working mine and teaching facility. [6] Three shafts exist – the main shaft sunk to a depth of 290 ft, a ventilation shaft sunk to 150 ft and an inclined shaft sunk 65 degrees horizontal to the mine's 140 ft level. This was established by students of the Colombo Plan to gain experience. [7]
The mine is part of the Julius Kruttschnitt Mineral Research Centre. [8] [9]
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. Exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material.
The University of Queensland is a public research university located primarily in Brisbane, the capital city of the Australian state of Queensland. Founded in 1909 by the Queensland parliament, UQ is one of the six sandstone universities, an informal designation of the oldest university in each state. The University of Queensland was ranked second nationally by the Australian Research Council in their latest research assessment and equal second in Australia based on the average of four major global university league tables. The University of Queensland is a founding member of edX, Australia's leading Group of Eight and the international research-intensive Association of Pacific Rim Universities.
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