Sample length (260mm long) of 107mm2 trolley wire supplied by Metal Manufacturers (Port Kembla Wire and Rod) - November 1996, Used in ceremony of 26/11/1996 when Victorian Minister of Transport, Alan Brown handed over the Trolley Wire (2km) to Museum. Sample supplied ex Test lab - had been tested for hardness. Wire type known as HC - high conductivity. Images added 3-12-2016 See Courier p6 of 27/11/1996 - see Reg. Item No. 503. trolley wire, btm

Eleven page article titled Water Softening in the Boiler by the 'Alfloc' System. This is an internal method of conditioning boiler feed water and the use of coagulants designed to prevent scale formation in the boiler and accessory plant, to reduce corrosion to a minimum, and further to provide for those conditions in the boiler water which from present experience are believed to prevent the occurrence of caustic ombrittlement. Different chemicals were used to suit different types of water in different areas. Items discussed are: Summary, Introduction, External treatment, Internal Treatment, General Principles of the 'Alfloc' Internal Treatment, Precipitation of the Scale-forming Salts, Temporary Hardness, Permanent Hardness, Conditioning of the Precipitate - Floc Formation, Efficient Control of the Concentration of both Dissolved and Suspended Solids by Blowdown, Prevention of Corrosion, Testing and Control, The 'Alfloc' Reagents for Internal Treatment, 'Alfloc' Liquors, 'Alfloc' Briquettes, Alfloc' Powders, Methods of Application, Liquors - Stationary boilers and Locomotive boilers, Briquettes - Stationary boilers and Locomotive boilers, Powders, Blowdown, Sludge, Caustic Embrittlement, Control of 'Alfloc' System, Cost and Economies of 'Alfloc' Internal Treatment and 'Alfloc' Water Treatment Service. Listed on page 11 are ICIANZ Sales Offices the Australian States. Between pages 7 and 8 is a page of diagrams. They are: Showing method of feeding liquors to the feed tank of boilers for 'Alfloc' internal treatment, typical arrangement of pressure vessel and typical arrangement of 'Alfloc' by-pass feeder.sciences, instruments - general, scalebuoy, bill ashman collection, alfloc system, imperial chemical industries limited alkali division, alfloc liquors, alfloc briquettes, alfloc powders, imperial chemical industries of australia and new zealand limited, elder smith & co limited, chemical & textile agencies pty ltd

Report - typed carbon copy - 35 foolscap sheets bound within a brown card folder, drawings, charts, secured with fold back clips, with adhesive tape binding on the outside. Titled "Wheels - 28" Wrought Steel - 1948 Rolling - Contract No. 1380", dated 24 September 1951, prepared by the MMTB Testing Department, Report No. W4/1/287. Gives details of the extensive testing done on a batch of wheels rolled by Commonwealth Steel Company Newcastle, approx. 450 wheels had been ordered. Includes details of manufacture, testing, chemical analysis, dimensional check, hardness and service details. Has many appendices, giving details of the wheels.trams, tramways, preston workshops, reports, specification, wheels, tramcars