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

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

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