R.M. Serjeant was listed as a mining manager and Joseph Flude as a metallurgist. In 1875 they were both living in Ballarat. The patent number is A.D.1875, 4th March. No 2031. According to the patent the hearth of the furnace is in the form of a cone revolving horizontally. The feed is supplied to the apex of the cone by an archimedian screw. The crown of the furnace comprises a double covering or roof with an intermediate chamber for receiving heated air. The inner covering is pierced to admit of the heated air being brought into contact with the pyrites on the face of the revolving hearth. The discharge of the roasted substance is affected by means of a scraper at the base of the cone. It was claimed that this was a new mode of introducing heated air, and the exclusion of flame during the operation of roasting pyrites. The self-acting charge and discharge of the furnace and the peculiar construction of the hot air chambers, and the use of perforated bricks through which the supply of air is affected were also new. (http://patentsvictoria.net/002031.html) From the Goulburn Herald, 14 September 1878 "A feature connected with the school of mines is the yet unfinished pyrites works. The extraction of the gold from pyrites and the utilization for commercial purposes of other substances connected with pyrites are peculiarly important to Ballarat, because were a simple and inexpensive method devised there are millions and millions of tons of quartz that would then be made remunerative. With this thought in their minds two scientific gentlemen invented the school of mines self-acting rotatory furnace. This, for lack of funds, has not been completed as yet, but the amount in hand for the purpose is daily increasing, and it will eventually be an accomplished fact. It is in contemplation also to erect machinery shops in connection with the school, and it is purposed to con struct a steam-engine to do at once the work of the pyrites treatment and the ma chine room. A model shaft and mine too are being prepared for on the reserve, so that practical mining of the most thorough character may be taught on the ground.'Letters Patent for an Invention for Roasting Pyrites to be called 'the Ballarat School of Mines Self-Acting Pyrites Furnace' to Robert Malachy Serjeant and Joseph Flude. The large document is on a vellum type paper complete with stamps and seal. The document is signed by Acting-Governor William Stawell.Written on verso: "Date of Patent 4th March 1875 No 2031 Letters Patent for An invention for roasting pyrities to be called "The Ballarat School of Mines Self-acting Pyrities Furnace" to Robert Malachy Serjeant and Joseph Flude Melbourne, Victoriaballarat school of mines, serjeant, r.m. serjeant, robert m. serjeant, flude, joseph flude, richard gibbs, stawell, william stawell, pyrities furnace, philately, statute stamp, seal (victoria), ballarat school of mines self-acting pyrities furnace, ballarat school of mines self-acting pyrites furnace

Interior view of the Maddern Roasting Furnace in the Ballarat School of Mines Model Minemaddern roasting furnace, ballarat school of mines model mine, ballarat school of mines battery

Colour photographs of the Thornhill Reef Quartz Roasting Kilns in the Muckleford State Forest.muckleford state forest, goldfields, mining

The Ballarat School of Mines had a functioning model mine.Two photographic images of the Ballarat School of Mines Cyanide House and the Maddern Roasting Furnace from the 1908 SMB Calendar.ballarat school of mines, maddern furnace, cyanide house, model mine

Printed technical drawings of 'Maddern's Patent Roasting Furnace' .1) Assembly drawings with dimensions (4 copies) .2) Details for Maddern's roaster (3 copies)w. maddern, roasting furnace, assaying, engineering drawings, w.a. maddern, maddern's roasting furnace

The cupels were made by a cupel making machine that had been transferred from the Ballarat School of Mines to the Ballarat Institute of Technology in 1970. It is possibly the same machine used by the first students at the Ballarat School of Mines in 1870. Small containers with curved inner shape. .1) Roasting dish or scorifier - shallow curved cup of clay. .2 & .3) Cupels of cylindrical shape with shallow hemispherical top surface. ballarat school of mines, cupel, assay, kiln, university of ballarat, mt helen, clay, ceramics

Tin metal rectangular roasting tin with folded corners and a ring at one end and is slightly rusted.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village

R.M. Serjeant was listed as a mining manager and Joseph Flude as a metallurgist. In 1875 they were both living in Ballarat. The patent number is A.D.1875, 4th March. No 2031. According to the patent the hearth of the furnace is in the form of a cone revolving horizontally. The feed is supplied to the apex of the cone by an archimedian screw. The crown of the furnace comprises a double covering or roof with an intermediate chamber for receiving heated air. The inner covering is pierced to admit of the heated air being brought into contact with the pyrites on the face of the revolving hearth. The discharge of the roasted substance is affected by means of a scraper at the base of the cone. It was claimed that this was a new mode of introducing heated air, and the exclusion of flame during the operation of roasting pyrites. The self-acting charge and discharge of the furnace and the peculiar construction of the hot air chambers, and the use of perforated bricks through which the supply of air is affected were also new. (http://patentsvictoria.net/002031.html) From the Goulburn Herald, 14 September 1878 "A feature connected with the school of mines is the yet unfinished pyrites works. The extraction of the gold from pyrites and the utilization for commercial purposes of other substances connected with pyrites are peculiarly important to Ballarat, because were a simple and inexpensive method devised there are millions and millions of tons of quartz that would then be made remunerative. With this thought in their minds two scientific gentlemen invented the school of mines self-acting rotatory furnace. This, for lack of funds, has not been completed as yet, but the amount in hand for the purpose is daily increasing, and it will eventually be an accomplished fact. It is in contemplation also to erect machinery shops in connection with the school, and it is purposed to con struct a steam-engine to do at once the work of the pyrites treatment and the ma chine room. A model shaft and mine too are being prepared for on the reserve, so that practical mining of the most thorough character may be taught on the ground.'Large indenture on red bordered vellum. The indenture was regarding a patent for the benefit of the Ballarat School of Mines. Letters Patent for an Invention for Roasting Pyrites to be called 'the Ballarat School of Mines self-Acting Pyrites Furnace" to Robery Malachy Serjeant and Joseph Flude. The large document is on a vellum type paper complete with stamps and seal. The document is signed by Acting-Governor William Stawell. Inscriptions and Markings Written on verso: "Date of Patent 4th March 1875 No 2031 Letters Patent for An invention for roasting pyrities to be called "The Ballarat School of Mines Self-acting Pyrities Furnace" to Robert Malachy Serjeant and Joseph Flude Melbourne, Victoriaballarat school of mines, serjeant, r.m. serjeant, robert m. serjeant, flude, joseph flude, patent, barry, redmond barry, rogers, judge rogers, bland, rivett henry bland, john airy, warrington rogers, establishment, indenture, legal, cuthbert, ballarat school of mines trustees, william stawell, john warrington rogers

The photograph was taken in 1947 at Rousano, an area located close to the village of Exoghi, Ithaca during the Greek Orthodox Easter Sunday celebrations at which the roasting of lamb on the spit is a tradition. A black and white photograph of a group of people in an outdoor rural setting, gathered around three men who are sitting next to a spit upon which meat is being roasted over an open fire. The photograph is one of a pair which have been mounted on cream board and laminated. celebrations, easter

This image was reproduced in the Ballarat School of Mines Handbook and Prospectus, 1905.Copy of a line drawing of the Ballarat School of Mines from Albert Street, Ballarat, including the battery and metallurgical laboratories, chlorination plant and roasting furnace, cyanide plant, engineering laboratory and the Ballarat School of Mines Botanical Gardens. The original of this image is Cat. No. 4774.ballarat, school of mines, battery, metallurgy, chlorination plant, roasting furnace, cyanide plant, engineering, laboratory, museum, assay, mine, m3334, ballarat school of mines botanical gardens

M. Eissler A.I.M.E. was a member of the Institute of Mining and Metallurgy.Red Hardcovered book of 678 pages with around 250 illustrations and numerous folding plates. Contents include: gold mining in California, Gold as a metal; Hydraulic Process; treatment of Gold bearing Ores; Crushing and Amalgamation (Queensland, California); Mills; Buddle; concentrator; Roasting ores; Roasting Pyritic Ores; Hydro-Metallurgy; Chlorination; Electro-Metallurgy; Cyanide; Erection of a Cyanide Plant; Chemistry of the Cyanide Process; Spelting, CupulationCrushing ore; 160 stamp battery; Mill site and battery; causes of failure in gold mining, South African Gold Fields; Gold in Australia (pg 589) Advertisements include: Fraser & Chalmers; Bowes scott & Western Ltd; Fried. Krupp Grusonwerk; Stanley; Humbolt Engineering Works Co., Townson & Mercer.gold, mining, metallurgy, pyrites, cupel, brook, rand, california, america, gold mining

Photocopy of a newspaper article titled Old battery to charge-up tunnel tourism. There is a photo of a Thompson's Foundry battery which is being re-erected at the site of the North British mine on Parkin's Reef, near Carman's tunnel. The battery was recovered from a deep gully at Bola Creek. Other works include restoration of quartz roasting kilns and cyanide vats. Written at the top of the article is a date 11/1/85.bendigo, history, long gully history group, the long gully history group - old battery to charge-up tunnel tourism, thompson's foundry, parkin's reef reserve, conservation forests and lands department, carman's tunnel, north british mine, carman's tunnel committee, dr doug kemsley, the prospectors' and miners' association of victoria, mr ken garden

In 1911 R. Maddern was President of the Ballarat School of Mines. Contents of this booklet are: Asssociateship, Calendar, Certificate Courses, Departmental Regulations, Discipline, Discipline Board, Examination Results, Fees, Full Certificates Issued, General Regulations, Introduction, Junior Technical School, Officer Bearers, Professors and Lecturers, Subjects of Instruction - Department of Chemistry and Metallurgy, Geological Department, Engineering Department, Electrical Engineering Department, Department of Mathematics and Physics, Practical, Plane and Solid Geometry, Photography, Subscriptions and Donations 1910. Plan of Buildings and Grounds Engineers with qualifications from the Ballarat School of Mines were sought by mines throughout the world. Blue soft covered book of 64 pages titled the Ballarat School of Mines Calendar. The book includes images of the Engineering Room, the Maddern Roasting Furnace, Museum, Junior Chemical Laboratory, Plan of Buildings and Ground, Chemical Laboratory, Concentration Floor, Linkenbach Table, Engineering Laboratory, Experimental Steam Engine, Chemical Lecture Room, Physics Instruction Room, Newtonian Telescopy, Ballarat Observatory, Instructor's Laoratory, Wilfrey Table, Chlorination plant, Cyanide House and R. Maddern. ballarat school of mines, scientific equipment, engineering, classroom, desks, gas lighting, calendar, r. maddern, j. m. bickett, w. h. middleton, j. d. woolcott, w. nixon, daniel. walker, fred j. martell, professor a. mica smith, hubert r. murphy, charles a. deane, arthur garrard, professor t. s. hart, professor a. d. gilchrist, a. e. c. kerr, j. brittain, e. j. a. mcconnon, john m. sutherland, bertram whitington, h. j. hall, e. gutheil, charles campbell, t. williams, d. e. mullins, sir redmond barry, judge rogers, r. m. sergeant, thomas bath, andrew anderson, general regulations, discipline, discipline board, associateship and final certificates, mining engineering, metallurgy, geology, electrical engineering, certificate courses, junior technical school, fees, subjects of instruction, chemistry, geological department, engineering department, electrical engineering department, department of mathematics and physics, practical, plane and solid geometry, photography, full certificates issued, supplementary examination results - may 1910, supplementary examination results - april 1908, subscriptions and donations 1910

Booklet of 30 pages. Table of Contents: Editorial, Theatre party, Economic Geology of Victoria, Obituary - Andrew Anderson Esq., J. P., Our President, Coal, History of roasting at Kalgoorlie, Melbourne electric supply co, Australian coinage, Pilbarite, Liquid air, What is the "Expression" for "Success in the electrical engineering professions?", Students' annual excursion to Melbourne, Melbourne city council's electric light station, Modern tunneling, Estimation of copper, Oxozone - a fume destroyer, News and notes, Sporting notes, Answers to correspondents, Past Students, Editorial notes. Images.Pink coloured booklet of 32 pages. Page 25 outline the whereabouts of past Ballarat School of Mines Students: A.R. Booth, W.T. Lakeland, Lewis Westcott, Leo M. Seward, Reginald Williamson, Stanley White, Clyde Allan, Charles Laird, W.E. Eyres, Virgil Tucker, H. Hawkesworth, H.J. Saw, H. Meadows, Fred G. Brinsden, C. Stevenson, Fred Treloar, J. Peart, E.M. Weston, Dick Galloway, Richard Galloway, G.R. Curry, H. Meadows, Will Watson, Don Cameron, Eric Bieske, Cliff Garrard ballarat school of mines, staff, obituary - andrew anderson, esq., j.p., l. w. g. buchner, a. r. booth, w. t. lakeland, lewis westcott, leo. m. seward, reginald williamson, stanley white, clyde allan, charles laird, w. e. eyres, virgil tucker, h. hawkesworth, h. j. saw, h. meadows, fred. g. brinsden, c. stevenson, fred treloar, j. peart, e. m. weston, dick galloway, h. b. bennetts, g. r. curry, will watson, don. cameron, eric bieske, cliff. garrard, lindsay d. cameron, phil brown, w. p. avery, j. foster, j. bickett, f. h. inglis, g. davenport, l. c. courbould, t. lennon, h. wilkins, g. h. reid, c. hesselmann, e. fraser, reginald callister, a.r. booth, w.t. lakeland, leo m. seward, w.e. eyres, h.j. saw, fred g. brinsden, e.m. weston, richard galloway, g.r. curry, don cameron, cliff garrard

This model of a mechanical ore roasting and chloridising furnace was invented and patented by Thomas Edwards of the Edwards Pyrites Smelting and Ore Reduction Company. This new type of furnace produced a high standard of sulphur free ore known as ‘sweet roasted’. Edwards used this model for demonstrations in the USA. Of note is the central large vertical cogwheel (externally driven) which drives small vertical cogwheels via angled cogging drives. These in turn drive a horizontal wheel. Each side of the vertical wheel is set on an opposite side to the horizontal wheel of its neighbours, resulting in opposite direction rotation of neighbouring horizontal wheels. Each horizontal wheel turns a rabble (set of vertical iron paddles) within the furnace. These rabbles, each turning in opposite direction to its neighbours, move the roasting ore in a zig-zag path through the furnace. The elongated furnace with its line of rabbles produced a much ‘sweeter’ roasted ore than could be obtained from a typical tank-shaped furnace. In 1924, when the model was donated to the Ballarat School of Mines, Ballarat’s Courier newspaper reported, ‘Apart from its historical and education value, the gift should serve to stimulate the inventive faculties of the students who have to win fame for the school and for themselves in the metallurgical world.’ The furnace model was donated to Ballarat School of Mines and used as an educational prop from 1924. The model relates to the mining industry which is a significant part of Ballarat's history and heritage. Ballarat School of Mines is the oldest Technical School in Australia and is celebrating 150 years in 2020.Metal model of Edwards' Ore Reduction Furnace. The model includes cogwheels, rabbles and other details. Scale is thought to be around 1:20M259ballarat school of mines, edwards, pyrites, ore reducation, edward retallack, mining, model

Three pages numbered 18/19, 20/21 and 22/23 titled Victoria Hill. First page has some information on Victoria Hill, a sketch of W Rae's Home and Rae's Open cut. The second page has a map of the Victoria Hill Area showing streets and the New Chum Anticline, a sketch of Ballerstedt's Open Cut and a Key to Victoria Hill Area Map. The third page mentions the Victoria Quartz mine, Tributors and quartz roasting. It also has sketch of a 20 Head Crushing Battery, Victoria Hill.bendigo, history, long gully history group, the long gully history group - victoria hill, gold mines hotel, christopher ballerstedt, theodore ballerstedt, ballerstedt's open cut, lansell's 180 mine, little 180 mine, new chum syncline battery, victoria reef quartz mining co, victoria quartz, new chum drainage scheme, a roberts and sons, tributors, william rae's bon accord mine and open cut, william rae, adventure and advance open cuts, central nell gwynne, heinz butcher shop

Firedogs is the common name for andirons and Chenets and have been in use since ancient Greek times. Firedogs are the decorative metal supports or stands that hold logs in a fireplace, allowing air to circulate around the fire to keep it burning, and preventing logs from rolling out of the fireplace. They are usually made of metal, cast iron or steel, but are sometimes ceramic. They have two feet joined across the front and one at the back. Some firedogs, mainly for kitchen use, were plain with forked uprights so that a bar could rest between them on which a cooking pot or a roasting spit could hang. Some firedogs are made in the likeness of animals, shields, crosses, figures and keys. This pair of firedogs are representative of the firedogs that were common to domestic use in previous centuries when home heating and cooking were only possible with open fires. Firedogs or andirons, pair of two decorative cast iron log supports for use in a fireplace hearth. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, fire dogs, firedogs, fire grates, log stands, domestic furniture, open fireplace equipment, andirons, chenets, domestic heating

The 1st edition of this famous work, giving an excellent account of the machinery used in late 19th century metal mining in the UK and overseas is very rare. It covers a wide range of equipment - pumps, steam engines, drills, winding engines, stamps & concentration mills, aerial ropeways, tramways and early uses of electricity etc. Brown hard cloth covered book. xvi 564 pages with additional advertisements, with over 300 illustrations and drawings, some fold out. Chapters include Water as a motive power, Wind engines and ventilating machinery, Steam boilers/engines and oil engines, hoisting machinery, draining of Mines, pumping engines, rock drilling machinery, boring machinery, concentration machinery, sizing and classifications trommels, joggers and jigging, fine concentration, milling of gold ores, milling of silver ores, amalgamation plates and machinery, dry and roasting machinery, chlorination and cyandide processes for the extraction of gold, electricity as a motive power for mining, electric lighting and blasting, aerial wire ropeways, transport by rail and road. There a a number of lovely line illustrations in the book including: Poncelot's undershot waterwheel; Fromont furnace;Victor turbine; Pelton waterwheel; Root's positive blower;Cross section and front elevation of Lancashire boiler; Robey's Compound Mill Engine; Portable Winding Plant; Iron Pit Head Gear ; Loading Arrangement in an Incline Shaft; kibble; Worthington Pump; California Pump; Scram's Air Compressor; Rock drill Bits; Special Sharpening tools; Boring tools;Rotating Picking table; Ore Feeder; roller crusher; stamp battery; round buddle; slime table; vanner; amalgamating plant; belt elevator;roasting furnace;splicing wire rope; capel; tipping waggon;mining, cornish pump, linkenbach table, water wheel, ventilation, oil engine, california, america, water, steam boilers, steam engines, oil engines, pumpimg, rock drilling, boring, jiggers, milling, silver, gold, drying and roasting, chlorination, cyaniding, lead, zinc, copper, electricity, electric lighting, wire ropes, transport, wind engine, poppet head

The development of bronze and iron metalworking skills allowed for cookware made from metal to be manufactured, although adoption of the new cookware was slow due to the much higher cost. After the development of metal cookware there was little new development in cookware, with the standard medieval kitchen utilising a cauldron and a shallow earthenware pan for most cooking tasks, with a spit employed for roasting. By the 17th century, it was common for a Western kitchen to contain a number of skillets, baking pans, a kettle and several pots, along with a variety of pot hooks and trivets. Brass or copper vessels were common in Asia and Europe, whilst iron pots were common in the American colonies. Improvements in metallurgy during the 19th and 20th centuries allowed for pots and pans from metals such as steel, stainless steel and aluminium to be economically produced. https://en.wikipedia.org/wiki/Cookware_and_bakewareThis item is significant as an example of an item in common use in the kitchen in the second half of the 19th Century, and thereafter.Metal oval cake/pie dish. Significant rust all over..None.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, cookware, bakeware, kitchenware

Modern iron cooking ‘ranges’ were being introduced from the late 18th century, however a vast number of people cooked in open fireplaces, well into the 1800s. Generally they were fitted with iron rods suspended above the fire or ‘cranes’ that could be swung in and out for easier and safer access to the pots that hung from them. These cooking systems may seem rudimentary, but a skilled cook knew how to manage pots, pans, cauldrons and pokers and expose them to the right type of heat by positioning them in various parts of the fireplace. They were also very versatile, enabling multiple cooking techniques – boiling, stewing, frying, roasting, toasting – all at the same time, using different types of vessels and utensils. https://blogs.sydneylivingmuseums.com.au/cook/hearth-fire-cookery/This type of item was used extensively over the centuries over open fires. It is still used in camping.Metal cooking pot with handle designed to hang the pot over an open fire.None.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, kitchenware, cooking, open hearth cookery

Textiles. Calico bag - ''Harpers Flaked Oatmeal'' Star brand, Trademark Registered ''My Brekfus'' 7 lbs Net. Robert Harper and Company Limited Australia. Head and shoulders drawing of a blonde haired girl surrounded by wheat.On the other side of the bag is a blue and white picture of a box of ''Silver Star Starch''. Robert Harper and Co Ltd. Slogan written on box, '' The best in the world. Won't sick to the Iron''. Robert Harper and Company (1842-1919), businessman and politician, was born in Scotland. He migrated to Melbourne with his family in August 1856. He worked for J.F.McKenzie & Co., roasting and grinding millers. In 1865 he established Robert Harper & Co., trading in tea, coffee and spices from the East Indies and later in oatmeal and flour.textiles, domestic, robert harper and co calico bag

Textiles. Calico flour bag printed on one side in red and blue''EMPIRE SELF RAISING FLOUR 25 lbs nett weight. Contains phosphate Baking Powder. Robert Harper & Company Incorporated Victoria, Australia''. In the background is a lighthouse with three beams of light extending from each side. Printed on the light beams- ''LIGHT BREAD, LIGHT PASTRY, LIGHT PUDDINGS, LIGHT LABOUR, LIGHT HEARTS, LIGHT HOMES''. Robert Harper (1842-1919), businessman and politician, was born in Scotland. He migrated to Melbourne with his family in August 1856. He worked for J.F.McKenzie & Co., roasting and grinding millers. In 1865 he established Robert Harper & Co., trading in tea, coffee and spices from the East Indies and later in oatmeal and flour.textiles, domestic, robert harper & co flour bag

78 pages pocket-size book of recipesnon-fictionOriginally published in 1894, this facsimile is an illuminating introduction to the difficulties faced by cooks at sea who had restricted equipment and limited or rationed ingredients. Alexander Quinlan and N. E. Mann were at the forefront of cookery training for seamen, which issued three types of certificates, depending on the size of vessel (sculling vessels, cargo steamers, or passenger steamers) and used six chief methods of cookery (roasting, baking, boiling, stewing, frying, and broiling). With 170 recipes--including gruel, beef tea, devilled bones, fruit jelly, pigeon pie, hodge podge, sheep's head broth, satisfaction pudding, bubble and squeak, and more--Cookery for Seamen is delightful nostalgia that highlights the challenges of life for the sea-going cook.cook, food, cookery, ships, seamen, liverpool, school, health, welfare, roasting, baking, boiling, stewing, frying, broiling, alexander quinlan, n.e. mann

Joan O'Shea Collection. Victoria Hill Bendigo Gold Mining on the Richest Quartz Reef in Bendigo, from 1854 to 1916. Colour and Black and White Booklet 16 Pages. Includes Maps of the Victoria Hill Area, photographs of the remains of a twenty head crushing battery, burnt ground from quartz roasting, The Victoria Quartz Mine Photograph from Australian Mining Standard June 1899, The compressor beds and concrete foundations for the poppet legs all that remain today of the Victoria Quartz Mine deepest mine on Bendigo Goldfield 4613 feet or 1406.04 metres. Also included photograph of the view of Victoria Hill from The New Chum Hill in the 1870s. The Location of the 3 mines Ballerstedt's open cut, North Old Chum and Lansell's 180 are marked. A depiction of Rae's Open Cut gives an understanding of the primitive nature of early workings on the Goldfields. The Booklet also provides a brief history of Victoria Hill itself.Bendigo Trust Publication March 1972. Printed in Bendigo Cambridge Press.bendigo, mining, victoria hill

"The United Pyrites Company's Works are situated about three quarters of a mile from Spargo Brothers, and are on the northern side of the Marong road, in Pinch-gut Gully. Two processes are followed at these works, viz., the amalgamating process and the treatment by means of chlorine gas. The latter is called the Newbery-Vautin system, and the mode pursued is that laid down by Mr. Cosmo Newbery and Mr Vautin, whose names have been given to the process. Mr. Edwards manages these works. Three reverbatory furnaces are used to roast the pyrites, which is weighed in the truck before being put into the furnaces. At this weighbridge a sample of each lot is kept, and if the yield is not equal to expectation, the works are carefully gone over to see where the fault occurs. Care is taken at the furnace to regulate the heat, otherwise the pyrites might slag instead of roasting evenly right through. An immense revolving furnace (made of boiler iron) was used at these works. It was found to be suitable for treating blanket sand, but was not a success for roasting coarse pyrites. The process of amalgamating by means of Chilian mills is the same in these works as at the Western Works, but the United Works are on a larger scale, and eleven mills are utilised. It is the chlorine gas process which is most interesting here. The gas is made from sulphuric acid, black oxide of manganese, and common salt, and the gas is introduced into huge vats, where it works its way through a filter of pieces of quartz and then through the bed of roasted pyrites lying above. The action of the gas transforms the gold into chloride of gold. This is easily dissolved in water, and in that form is drawn off into huge delf jars, where the use of sulphate of iron precipitates the gold to the bottom. A small battery—eight head of stamps in two boxes—is in use here to crush small consignments of stone sent for trial. Test crushings come from all the Australasian colonies, and even from India. The jars used are manufactured at Epsom, and some of the salt used is also of home manufacture, from the Salt Lakes on the Northern plains. Mr. Edwards took us over a new building in course of erection, and in which the chlorine gas is to be generated in the midst of the pyrites— a still further advancement in the new process. There is some very good machinery in this new building, and the tailings from the ordinary pyrites works will also be treated by this chlorine gas system, which has been found to work well at Mount Morgan, in Queensland. The purest of gold is obtained by this process, the gold passing in solution into a charcoal filter, from which it emerges in the shape of metallic gold. We saw some nice cakes of retorted gold at the works. One of 26oz. was from some New Zealand pyrites (2½ tons), and assayed over 23 carats. There were also cakes of Avoca gold, of silver, and of the tremulous amalgam." (The Argus, 4 February 1887)Two handwritten letters to the Ballarat School of Mines on Bendigo United Pyrites Company Letterhead.bendigo united pyrites company, pyrites, ballarat school of mines, j.j. deeble, joel deeble, joel james deeble, a.m. dean, fred j. martell, martell, s.h. cowan, letterhead