Showing 7 items
matching assaying dry
-
Federation University Historical Collection
Booklet, Ballarat School of Mines Register of Attendances for Practical Dry Assaying, 1907
... Practical Dry Assaying...dry assaying... University Australia. ballarat school of mines assaying dry assaying ...The Ballarat School of Mines is a predecessor institution of Federation University Australia. A slim, green pastel, hard cover volume with dark green spine. Two full-width pages for entering names of those enrolled.ballarat school of mines, assaying, dry assaying, henry murphy, h.r. murphy -
Federation University Historical Collection
Exercise Book, Assaying (Dry), Grades 1 and 11, 1905, Douglas Scott
... Assaying (Dry), Grades 1 and 11, 1905, Douglas Scott... cover missing, Assaying (Dry), Grades 1 and 11, 1905, Douglas ...Black covered exercise book, front cover separate, back cover missing, ballarat school of mines and industries, ballarat, douglas scott, assaying -
Federation University Historical Collection
Document, List of Subjects
... Assaying Dry... practical Assaying Dry Mr. Murphy Ore Dressing Practical Mining ...School of Mines Ballarat is predecessor of Federation University Foolscap sized list of Subjects from Ballarat School of Mines with handwritten names.8S3S in large writng on the back school of mines ballarat, practical chemistry, mr. walker, theoretical chemistry, theoretical agricultural chemistry, practical agricultural chemistry, technical chemistry, metallurgy, alfred mica smith, metallurgical calculations, metallurgy of gold and ore dressing, assaying practical, assaying dry, mr. murphy, ore dressing practical, mining, mining geology, mineralogy, geology, petrology, botany, applied mechanics, mr hart, mine surveying, land surveying, steam and gas engines, mr gilchrist, elementry electricity & magnetism, electrical technology, mr sutherland, turning and fitting, mr connon, engineering drawing, mr kerr, geometry, algebra, trigonometry, physics, conics, calculus, mr whitington, building construction, plane and solid geometry, plumbing grade, mr hall, mr mullins, carpentry, wool classing, materia medica, mr gutheil, technical arithmatic, mr hutchison, telegraphy, mr williams, sloyd, mr slater, photography, mr campbell, manual training, cyanide, mr deane, mr brittain, mr martell, english, astronomy, list of subjects -
Flagstaff Hill Maritime Museum and Village
Instrument - Scale, Early 20th century
The basic balance scale has been around for thousands of years and its accuracy has improved dramatically over the last several centuries, the principle behind this tool remains unchanged. Its parts include a fulcrum, a beam that balances on it, a pan at the end of the beam to hold the materials to be weighed, and a flat platform at the other for the counter-balancing weights. Balance scales that require equal weights on each side of the fulcrum have been used by everyone from apothecaries and assayers to jewellers and postal workers. Known as an unequal arm balance scale, this variety builds the counterweight into the device. Counter scales used in dry-goods stores and domestic kitchens often featured Japanned or (blackened) cast iron with bronze trims. Made by companies such as Howe and Fairbanks, the footed tin pans of these scales were often oblong, some encircled at one end so bulk items could be easily poured into a bag. Seamless pans were typically stamped from brass and given style names like Snuff (the smallest) and Birmingham (the largest). Some counter scales were designed for measuring spices, others for weighing slices of cake. In the 18th century, spring scales began to appear and would use the resistance of spring to calculate weights, which are read automatically on the scale’s face. The ease of use of spring scales over balance scales. One of the most common types of spring scales was the kitchen scale also known as a family or dial scale. Designed for horizontal surfaces, these vintage kitchen scales used the weight of goods in a pan at the top of the scale to force the spring down rather than the balance system. Such scales were common in early 20th century households and were sold by many companies. Many had flat weighing surfaces but some were topped by shallow pans. Companies such as Salters, Chatillon, and Fairbanks were the most popular brands used. These scales are significant as they identify one of the basic preparation items for the weighing of foodstuff in the family kitchen to prepare everyday meals. This item is significant as it gives a snapshot into domestic life within the average home in Australia around the turn of the twentieth century and is, therefore, an item with social relevance. Black cast iron, medium weighing scales, with a fulcrum which the beam that balances on, there is as scoop at one end for the material to be weighted and a flat circular disc at the other end that holds the weights. Around the cast iron base is an embossed leaf pattern. All the weights have their weight embossed within the casting.There are 5 weights, marked 2 oz, 4 oz,8 oz,1 lb,2 lb, This scale does not have any visual markings on the arms to identify a maker or true balance. It is therefore assumed that these scales were made for domestic use only.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, spring scale, scale -
Flagstaff Hill Maritime Museum and Village
Instrument - Scale, 1900-1930
The basic balance scale has been around for thousands of years and its accuracy has improved dramatically over the last several centuries, the principle behind this tool remains unchanged. Its parts include a fulcrum, a beam that balances on it, a pan at the end of the beam to hold the materials to be weighed, and a flat platform at the other for the counter-balancing weights. Balance scales that require equal weights on each side of the fulcrum have been used by everyone from apothecaries and assayers to jewellers and postal workers. Known as an unequal arm balance scale, this variety builds the counterweight into the device. Counter scales used in dry-goods stores and domestic kitchens often featured Japanned or (blackened) cast iron with bronze trims. Made by companies such as Howe and Fairbanks, the footed tin pans of these scales were often oblong, some encircled at one end so bulk items could be easily poured into a bag. Seamless pans were typically stamped from brass and given style names like Snuff (the smallest) and Birmingham (the largest). Some counter scales were designed for measuring spices, others for weighing slices of cake. In the 18th century, spring scales began to appear and would use the resistance of spring to calculate weights, which are read automatically on the scale’s face. The ease of use of spring scales over balance scales. These scales are significant as they identify one of the basic preparation items for the weighing of foodstuff in the family kitchen to prepare everyday meals. This item is significant as it gives a snapshot into domestic life within the average home in Australia around the turn of the twentieth century and is, therefore, an item with social relevance. Black cast iron, medium weighing scales, with a fulcrum which the beam that balances on, there is a scoop or large bowl at one end for the material to be weighted and a flat platform at the other end that holds the weights. Around the cast iron base is an embossed strip weight and bowl missing.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village -
Bendigo Historical Society Inc.
Document - NORTH DEBORAH GOLD MINING CO N. L. - ASSAY RESULTS FOR NORTH DEBORAH GOLD MINING CO N. L
Two handwritten pages, addressed to Mr J. J. Stanistreet, Commonwealth Bank Chambers, Bendigo. Notes mention the gross weight, moisture content and net-dry weight of Pyrites Lot no 68, Slimes or Strakes Lot No 67 and Blanket Sand Lot no 66. Assay results are also mentioned. The share for Tributors is also tabled.document, gold, north deborah gold mining co n. l., north deborah gold mining co n. l., assay results for north deborah gold mining co n. l., mr j j stanistreet, school of mines, victor leggo & co -
City of Greater Bendigo - Civic Collection
Equipment - Crucible, Bendigo Pottery
Assay is a process of metallurgy and chemical analysis used to determine proportions of precious metals in ores and other metallurgy substances such as silver or gold. The process helps identify pollutants present within a sample and can indicate a high level of pollution in a mining site. Stoneware crucibles are used in the fire assay process due to their ability to withstand high temperatures. Fire assay is a three step process where by samples from the mine are ground in a find powder and then mixed with dry powder chemicals. This mixture is heated in a crucible to extreme temperatures (crucible fusion) until all of the powers fuse into a glass like slag. Once this reaction is complete, the contents are poured into a mold and cooled. In step three (known as cupellation) the mixture is separated in a fire assay cupel and once this is complete the cupel with reveal a small bead of precious metals. Established by George Guthrie in 1857 (about 5km north of its current site) and then again seven years later in 1864 after it initially closed, Bendigo Pottery remains one of the most influential and longest running potteries in Australia. Over the years the Pottery has contributed to the growth and development of the district through both its products including building products, table ware and decorative and commemorative war as well as artistically, being responsible for training and supporting many potters locally. It has partnered with the City on various tourism promotions and the Civic Collection holds a number of important items within its collection.Two stoneware vessels of differing dimensions (0287.1 & .2). Unglazed and porous, showing extensive signs of use. Stamped and marked on the outside. 0287.2 has a shaped pouring lip. Six smaller items, coins, buttons (0287.3,.4,.5,.6,.7,.8) were found with the crucibles but their relationship to the assay items is unknown.0287.1; Large crucible; Bendigo Pottery / E. 0287.2; Small crucible: Pottery / C Icity of greater bendigo commerce, city of greater bendigo mining, making a nation exhibition