Wooden model of a cyanide plant. A cyanide plant was used for dissolving gold from finely divided ores by means of dilute solutions of sodium or potassium cyanides. The model has five metal bins, there is some rust on the bins and scorch mark on the wooden base.mining, equipment, cyanide plant, gold cyanidation (also known as the cyanide process or the macarthur-forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. it is the most commonly used leaching process for gold extraction. the ore is comminuted using grinding machinery. depending on the ore, it is sometimes further concentrated by froth flotation or by centrifugal (gravity) concentration. water is added to produce a slurry or pulp. the basic ore slurry can be combined with a solution of sodium cyanide or potassium cyanide, however many operations utilize calcium cyanide, which is more cost effective. to prevent the creation of toxic hydrogen cyanide during processing, slaked lime (calcium hydroxide) or soda (sodium hydroxide) is added to the extracting solution to ensure that the acidity during cyanidation is maintained over ph 10.5 - strongly basic. lead nitrate can improve gold leaching speed and quantity recovered, particularly in processing partially oxidized ores.

Document: McColl, Rankin and Stanistreet: Deborah Mine papers - bullion record book. Green hard cover with paper pages listing ore (tons) produced, bullion produced, bank charges. 'Deborah Gold Mines NL' handwritten and stamped on inside page.organization, mining, mccoll, rankin and stanistreet, mccoll, rankin and stanistreet: deborah mine papers, bullion, gold mining

Dates from gold-mining period in Queenstown (St. Andrews) Caledonian Diggings. Used for lift ore to the surface by windlass in small-scale shaft mines.Heavy leather bucket with iron reinforcing and handle. Panels are stitched and joined with thonging Ironwork is hand-forged and rivetted in place.

Cast iron dolly pots were used in the mining industry to crush ore specimens and samples into dust before panning. The principle is the same as a mortar and pestle.This item has two pieces both are made from cast iron and are rusted and a dark brown color. One is a tapering cylinder 16.5 centimetres wide a its top, the first two and a half centimetres down tapper to 13.5 diameter, the next nine centimetres tapper to 11 centimetres diameter. the last two and a half centimetres is a solid base that flares out to a 16.5 centimetre diameter, the inside of the bottom of the cylinder is a bowl shape. The other piece is a solid tapering shape, it's four and a half centimetres in diameter at one end which tappers to three centimetres in four centimetres of length, the next sixteen centimetres tapper to two centimetre diameter. There is a knob on top, one and a half centimetre high and two and a half centimetres wide.mortar and pestle, dolly pot, gold minning

Black cover book, wire binding, 13 pages of text and maps. On front: Fosterville Gold Project' Map of ore body on cover - Central North, Central Ellesmere, Harringtons Hill. Contents include: open pits, heap leaching, waste dumps, estimated project life, changes from previously approved project, estimated project life, main project components, expanded open pits and underground mines, processing sulphide ore, tailings storages, waste rock dumps. Principles of rehabilitation, site preparation, rehabilitation activities during operation and decommissioning activities. Environmental issues, and summary of proposed new operating conditions.bendigo, mining, fosterville gold mine

Two Colour Photgraphs: 7078 One Male Greg Cameronwith a blue cap and glasses crouched behind an Ore Truck, photo taken outside. 7078a showing a painted red box, with faded paint, covered in soil with a broken open door that was used as a powder magazine.mining

Came from India and given to Bette Jones by Mrs McDonald. Mrs. McDonald lived in Orion St. Mitcham for last twenty years of her life. She was EnglishWhite tea cosy made of Teneriffe lace with ruffled edge linenhandcrafts, lacemaking, manchester, table linen

Slide. .New Moon Gold Mine, Eaglehawk. Mine situated west of Beebzlebub Road, Eaglehawk. Poppet head in centre of image, brick chimney and mine buildings on RH side, ore bins and mine sheds on LH side. Image sourced from 'Healthy, Golden Bendigo' book.No. 25 printed on bottom of slidemine, gold, new moon., bendigo mines-jack hattam collection

Brown leatherette book with blue binding. Stamped on the front cover: Central Nell Gwynne Gold Mining company No Liability. And written in ink: Gold Book. Detailing tonnages of ore crushed and the amount of gold extracted. Dates range from 20th March 1942 to 19th January 1950.gold, mining, central nell gwynne, bendigo, gold mines, central nell gwynne

Wooden model of a four heads gold stamper battery. The gold stamper battery is a device for crushing ore. The parts of the battery are: cams; dies; guides; kingposts; mortar box; shoes; stamps (or stampers); tappets. The model belt is broken and the brace on the left hand side facing the back is missing.gold mining, mining equipment, gold stamper

Malachite is a water soluble, crystalline, triphenyl methylene chloride salt. It has a close relationship to copper because it is common for Malachite and copper to come from the same ore. Malachite often has shades of green, making it also known as Malachite Green. As a result of it's colour, it is known for being a dye and has been used in the dye industry, the textile industry and in medical fields. Cobar in New South Wales is well known for it's mining. This is because of the number of important deposits present in the area and include three important mining belts where most of the materials are found. These are the 'Cobar belt', the 'Canbelego belt' and the 'Girilambone belt'. The 'Cobar belt' runs underneath the main town. Copper was first discovered in Cobar in 1869 and since then, many deposits of other materials have been found, including Malachite.This specimen is significant because it comes from Cobar, NSW and represents the many deposits of materials found there. Cobar has a long history of mining and is a source of Australia's copper minerals. Malachite is often found in copper deposits meaning that it is representative of Cobar's copper production. Malachite is known for it's vivid green colour and as a result, has many uses, such as meaning used as a dye. This makes it a valuable material and highly significant. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study.A solid hand-sized mineral with shades of brown , white and light green throughout.geological specimen, geology, geology collection, burke museum, beechworth, malachite, copper, water soluble, cobar, cobar mines, cobar mining, cobar nsw, nsw, new south wales, mining belts, ore, copper ore, malachite green, dye, green, dye industry, textile industry, desposits, canbelego, girilambone, alfred selwyn

Miners' picks were commonly used in the nineteenth and early twentieth century for extracting gold from underground mine tunnels.Found in the Harrietville area. Similar to those used in the nearby Kiewa Valley where prospecting for gold was also an occupation.Formerly KV 071. Handmade - of steel with a wooden handle. It was used to break up rock and ore, making it easier to extract valuable minerals. The pointed end of the pickaxe was used to chip away at rock, while the flat end was used to strike the rock for breaking it apart. This one has a long handle.gold mining, miners' pick

Slide. New Argus Gold Mine, Eaglehawk, west of Sailor's Gully Road. Image taken about 1906. Poppet head with elevated tramway, with ore cart on tracks. Engine room and boiler on LH side, brick chimney at rear. Large group of men standing at base of poppet head.No. 23 on bottom of slide.mine, gold, new argus., bendigo mines-jack hattam collection

Diggers & Mining. Diggers and Miners. Ore from the mines was crushed by the batteries and them treated to remove the gold. This crushed rock, or tailings, was then carried from the mines in water flumes. The tailings usually contained small quantities of gold. Markings: 40 994.5 WAL. Used as a teaching aid. Used as a teaching aid.hanimounteducation, tertiary, goldfields

Diggers & Mining. Diggers and miners. Walhalla - Gold Town. A gold rush occurred, and almost immediately a rich reef called Cohen's Reef was discovered. Mining companies were formed to work the reef, and in 1864 the batteries were crushing profitable ore. Markings: 12 995 WAL. Used as a teaching aid.hanimounteducation, tertiary, goldfields

Miners used pickaxes to break up rock and ore, making it easier to extract valuable minerals. The pointed end of the pickaxe was used to chip away at rock. The flat end was used to strike the rock for breaking it apart.Used in the Kiewa Valley by miners searching for gold.Cast steel 14 inches long with a sharp pointed end and a small flat end. There is a space for the handle which is missing and may have been made from wood.mining, miners' pick axe

BHS CollectionSoftcover booklet produced for the 1997 Worner Research Lecture 9 October 1997. Cover contains black and white photograph of a poppet head, with gold coloured inserts bearing the title, authors and date. 29 pages with the contents of the lecture together with illustrations and photographs. Lecture covered the history and geology and the refractory gold ores.Published by Lat Trobe University Authors Howard K Worner and R F Johnston.bendigo, gold mining

Mining Scene Sloane's & Scotchmans United Quartz Mining Co c1900. Ore hopper can be seen at left of poppet head. Sloane's & Scotchmans United Quartz Mining Co was the last mine company to close down in Stawell. View of poppet head and engine shed. Large cloud of smoke coming from engine house. Foreground bare earth.mining, panorama

Document: 2 copies of complimentary guide to the Central Deborah Gold Mine. Details information about poppet legs and shaft, change room, drying room, first aid room, ore bins, boiler, stoke hold, winding engine, boiler feed pump, electric compressor, dteam driven compressor and blacksmith's shop.Central Deborah Gold Mine NLorganization, business, central deborah gold mine, mccoll, rankin & stanistreet collection: central deborah gold mine nl, goldmining

Remains of the timber foundation of the State Battery, built here in 1897 can be seen on the banks of the Yarra River just east of the Warrandyte Bridge on the Warrandyte side of the river. The Battery was driven by waterwheel and was used to crush ore from the Warrandyte Goldfields.fay bridge collection, 2016-11-07, warrandyte battery, ruins