Dr. Gavin Oakley, Blackburn dentist spearheaded the introduction of fluoridation to Melbourne's water supply in the late 1970's.Dr. Gavin Oakley, a Blackburn dentist.oakley, gavan, blackburn

Fluorite comes in a variety of natural colours and crystal formations and glows under ultraviolet light (the word 'fluorescence' comes from the same etymological source). In its pure form, calcium fluoride, it is a colourless combination of the elements calcium and fluorine, but gains its colour from trace elements that infiltrate or replace calcium within its crystal structure during its formation. Although fluorite crystals polish well and can achieve a high level of lustre, the mineral is very soft (4 on MOHS hardness scale) so it is unsuitable for use in rings and must be handled and stored carefully if used in other forms of jewellery. Most crystals of the mineral are too coarse for decorative purposes but have been mined under the name fluorspar for a variety of commercial and industrial purposes. These include the production of hydrofluoric acid, smelting metal alloys, producing glazes and ceramic finishes and use in medical and dental products. An existing label for this specimen indicates that its origin or collection-point was 'probably USA.' Fluorspar, the form of fluorite used commercially and industrially, was mined in significant quantities in the counties of Hardin and Pope in South-Eastern Illinois throughout the Nineteenth and Twentieth Centuries. Fluorite was made Illinois' state mineral in recognition of its contribution to the state's identity and economy. The specimens are significant as examples of surveying activity undertaken to assess and direct the development of the mineral resource industries, as well as the movement to expand human knowledge of earth sciences such as mineralogy and geology in the nineteenth century.The specimen is a piece of purple shaded fluorite (also known as fluorspar), the mineral form of calcium fluoride. The unpolished specimen presents a dark purple interior with a substantial dark grey crust representing the matrix from which the specimen was obtained. Existing label: Flourite / (purple) / probably / USA / BB /burke museum, beechworth, geological, geological specimen, fluorite, flourite, calcium fluoride, hydrofluoric acid, jewellery, indigo shire, north-east victoria, mining, illinois, usa, united states, fluorine, gemstones, purple stones

The Norman Oliver collection. Norman Oliver was three times Mayor of Bendigo - 1950-51, 1964-65, 1970-71. Four pages of typed notes, undated, but in sequence labelled 1964. Topics include : a trip to Newcastle, fluoride in the water supply, Industrial Expansion committee, Bendigo Football League, correspondence to council, pig and calf saleyards in Bath Lane, flies in summer and sanitary disposal, and council budgets.bendigo, council, speech notes, norman joseph oliver , councillor norman oliver. mayor of bendigo. fluoride. pig and calf saleyards - bendigo.

98 page newspaper supplement celebrating the century 1900-2000. Includes 100 names of great Ballaratians.the courier, ballarat courier, anniversary, century, steve bracks, tom o'meara, bruce morgan, weston bate, r.f. scott and co, camerons, sunshince train crash, nellie melba, queen victoria's death, star of the east gold mine, sebastopol, phoenix foundry closure, duke of cornwall and york, duchess of cornwall and york, central highlands water, electric trams, workld war one, richard w. richards, dick richards, william dunstan, mccann's dairy centre, conscription, george merz, peace, avenues of honur, red cross, james oddie, henry sutton, band competitions, influenza epidemic, ballarat council merger, bert hinkler, frank petch, bartrop real estate, ballarat zoo, english cricket team visits ballarat, the dole, the depression, sustenance works, charles kingsford smith, ballarat centenary, black friday, world war 2, world war two, walter davis, cuthberts, albert coates, john rowan, langi kal kal soldier setttlement, ronaldson and tippett, america soldiers, united stated marines, military hospitals\corckers, gollars, robert clark, edward j. bateman, ellinor morcom, f.w. barnes and son, rex hollioake, cricket, edgar bartrop, ideal homes competition, ballarat begonia festival, percy beames, bigarelli, good neighbourhood council, baird and mcgregor, sunicrust bakeries, begonia queens, tom beaumont, thomas toop, ray murphy, alice andrews, bobby greville, jack hill, john vernon, ballarat civic hall, haymarket, royal visits, trams, olympic games, robert lemke, bob bath, boxing, norm pinney, jack barker, greg binns, geoffrey blainey, pam davies, david haymes, m.b. john, morgan b. john, austin mccallum, steve moneghetti, richard crouch, voi williams, elsi simper, e.j. tippett, kenn webb, hugh williamson, st john's lutheran church, ballarat fine art gallery, art gallery of ballarat, peter tobin funerals, keith bray, john valves, vietnam war, john dellaca, haymes paints, henry haymes, sovereign hill, gold museum, dowling forest racecourse, ballarat turf club, mt helen campus, rupert hamer, swagman, bill mahoney, constance coward-lemke, hymettus historic garden, c.v. jones, eureka flag, save bakery hill, jessie scott, anne beggs sunter, ray's tent city, art theft, woodsplitters by tom roberts, fluoride, jack chisholm, ballarat railway station fire, princess diana, prince charles, university of ballarat, university of ballarat 130 anniversary, hailstorm, ballarat brewery closure, bicentenary, flooding, recession, pat cashin funerals, camp street arts precinct, arts academy, scout jamboree, ballarat learning city, council amalgamation, linton bushfire, eureka stockade centre, russell mark, tony lockett, east timor, ballaarat general cemeteries trust, john barnes, william heres, nelson brothers funeral services, valcor australia, bob davis, john curtin, david davies