Ria Grande Mine Shaft, Mount Isa, 1929

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Where: Queensland, Mount Isa, Australia

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Creator: Comet Studio.

Location: Mount Isa, Queensland.

View the original image at the State Library of Queensland: onesearch.slq.qld.gov.au/permalink/61SLQ_INST/dls06p/alma...

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Owner: State Library of Queensland, Australia
Source: Flickr Commons
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queensland statelibraryofqueensland kalkadoon outbacktowns history mountisa johnoxleylibary john oxley library rio grande mine shaft photographs collection old construction

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    Bazza155

    • 28/Feb/2023 10:09:23

    Ore Bins under construction. Lawlor Shaft, Rio Grande Orebody. 27th September 1930. This orebody was developed to bring the surface to be dumped into the bins. From these bins a train would take this ore around to a Glory Hole in the Black Star mine and dump the ore down to 4 Level Haulage. Around this time disaster struck the 4 Level Drive due to cutting into a huge aquifer and the water inflow was uncontrollable. The miners were sent elsewhere while the water inrush was being controlled. The miners started out to cut a downhill drive from 4 Level in the Rio Grande to a meet up with the 4 Level Haulage drive from Black Star Mine to No. 1 Ore Shaft, Urquhart Shaft. This made the surface operation at Lawlor Shaft redundant

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    vesna0103

    • 17/Apr/2023 08:54:16

    MOUNT ISA MINES LIMITED. The following progress report has been receded from the Mine Superintendent of Mount Isa Mines Limited for the period ended November 15 :— Lawler Shaft.—Rio Grande lode, 150ft. level: North drive was extended 14ft. 6in, total 103ft, from the main crosscut. Average assay values were 28.5 percent, lead, and 28.7oz. sliver per ton, over a width of 53in., with ore on both sides of the drive South drive was extended 16ft. to a total of 82ft., from the main crosscut, in ore averaging 25.6 percent, lead, and 23oz. silver per ton, over a width of 47in., with ore on both sides of the drive. Diamond drill borehole No. 1 was sunk 57ft., to a total depth of 197ft. below the surface, and cased to 90ft. In hard shale and ironstone. Source: "The Brisbane Currier" 30 Nov 1926 trove.nla.gov.au/newspaper/article/21087400#