Used in the Physics laboratory for calculating/confirming relative density, or specific gravity, of given metal samples.10 x 2.5 cm metal cubes of differing types of metal, for measuring specific gravity of different metals. Contained in a white cardboard box.Number on each designating the material made frommetal cubes, specific gravity, scientific instrument, ferrous cubes, brass, copper, steel, lead

Glass urine specific gravity measure.Cream coloured manufacturers box labelled with a pale blue and cream label: "Diabetes Urinometer and Specimen Tube. Manufacturer Precision Glass Instrument Co, Melbourne". Blown glass urinometer used to measure the specific gravity of urine. It consists of 3 parts: I. The float: is the air containing part II. Weight: the lower end of urinometer (metal ball bearings) III. Stem- Has calibrations with numbers marked to measure the specific gravity Missing urine holding specimen tubeHospital type diabetes urinometer 60 degrees F Precision Glass Instrument Co. Melb. Measurements on stem from 000 to 030 urine specific gravity measure, urine testing

Specific Gravity ManometerGlassspecific, gravity, manometer

Used in Physics Laboratory at Ballarat School of Mines for calculating/confirming relative density (or the specific gravity) of given metal samples. This would have been in Elementary physics experiments.A set of seven 2-cm cubes, individually numbered 1 - 7, in a hinged-lid storage box with black surface finish.Number and metal of cubes: 1) Brass; 2) Lead; 3) Steel; 4) Copper; 5) Aluminium; 6) ? a ferrous alloy; 7) ? a ferrous alloy.physics, laboratory, ballarat school of mines, relative density, specific gravity, metal, elementary physics, brass, lead, steel, copper, aluminium, ferrous alloy

This specimen was recovered from Mica Schist, Canada. Chalcopyrite is a copper iron sulfide mineral with a chemical composition of CuFeS2. Its name derives from the Greek words for copper (chalco-) and brass (pyrite). It can be found in shades of yellow, green and grey, and, when exposed to acid, it can change to purple, blue, violet and yellow tones. Weathering can cause loss of its metallic luster and its brass-yellow colour. Chalcopyrite forms under various conditions, with the most significant deposits being hydrothermal in their origin. It is known globally as the most important ore of copper for thousands of years, and is thus considered a very important mineral formation. Given its golden appearance, it is often confused for the mineral gold, earning it the popular reputation as 'fool's gold' or 'yellow copper'. However, it can be straightforwardly distinguished from gold; the latter is soft, with higher specific gravity and a yellow streak, whereas chalcopyrite is brittle, easily scratched by a nail, and has a greenish grey streak. Copper was the first metal that was used by people. It was discovered by the Neolithic man about 9,000 years ago and it gradually replaced stone as it was easier to be shaped. In Australia, search for copper began after the European settlement, leading to the discovery of substantial deposits, like the one at the Olympic Dam in South Australia, which is regarded as one of the largest copper deposits in the world. Chalcopyrite has been used for copper since smelting processes began approximately five thousand years ago. Although by no means rare, this the specimen of this mineral can be used to reflect a wider history of industrial uses of copper for a significant portion of human history. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study.A solid hand-sized copper iron sulfide mineral of brass yellow, often with an iridescent tarnish, with greenish-black streak and submetallic luster. Chalcopyrite can be formed in several ways, including crystalizing from accessory minerals in igneous rocks, or from magma or within volcano sulfide deposits. Most commonly, chalcopyrite are found in hydrothermal conditions, where it forms in hydrothermal veins. As a member of the tetragonal crystal system, it often takes the shape of tetra-headed crystals, often with striations along the sides of the crystals. #18 Copper pyrites/(chalcopyrite) in/Laurentian Slate/(page 315 of inventory)/page missing from/descriptive catalogue/ Other label: 81 /fool's gold, chalcopyrite, mineral, rock, geology, geological, hydrothermal, neolithic, european settlement, olympic dam, south australia, stone, deposits, specific gravity, greenish grey streak, brittle, mineral gold, metallic luster, cufes2, greek words

John Kennedy was born on 04 April 1862, the son of ship carpenter Robert Kennedy and his wife Florinda (Aitken), and the brother of Malcolm and Colin Kennedy. In 1860 the family migrated to Melbourne where Kennedy senior set up as a shipwright. In 1879 Malcolm and John, who trained as a naval architect, joined their father as Robert Kennedy & Sons, shipbuilders and shipsmiths. On 27 December 1883 at North Melbourne, Malcolm married Ann White with Presbyterian forms. Next year Robert Kennedy & Sons removed to Hobart where with John W. Syme and W. J. Duffy, partners until 1889, they took over the Derwent Ironworks & Engineering Co., a foundry formerly owned by the (Alexander) Clark family. The Kennedys also acquired the patent slipyard, formerly Ross's, at Battery Point. After the shipbuilding industry in Hobart began to flag John also turned to mining: he attended the Ballarat School of Mines, and reopened the Hobart smelters which had been an adjunct of the Derwent Ironworks in the 1870s. He made several voyages overseas on smelting business and as mining promoter, and was a member of the London Stock Exchange. In 1913-14 he was manager of Tongkah Compound (1910); Robert Kennedy & Sons was reputed to have contributed to the success of the Hobart-run Tongkah Harbour, Thailand, tin mines by developing a suitable dredge. The brothers also held shares in the Irrawaddy Burma Co. John was a member of the Australasian Institute of Mining Engineers and from 1932 an honorary life member of the American Institute of Mining & Metallurgical Engineers. John died in Hobart on 10 January 1937. (Ann G. Smith, 'Kennedy, John (1862–1937)', Australian Dictionary of Biography, National Centre of Biography, Australian National University, http://adb.anu.edu.au/biography/kennedy-john-7092/text11963, published first in hardcopy 1983, accessed online 24 April 2020.) A book covered in black leather with 'John Kennedy' embossed on the front in gold. The book contains notes from the time he studies at the Ballarat School of Mines. The beginning of the book has an alphabetical section where John Kennedy has created an index.Inside front cover 'John Kennedy Nena Wharf Hobart Tasmania.' john kennedy, australasian institute of mining engineers, ausimm, american institute of mining metallurgical engineers, ballarat school of mines, lecture notes, lecture notebook, antinomy, brick clay, carbon, coal, copper, chemistry, clay, chrome, electricity, fire clay, gas, gold, gold bullion, glass, gold test for, iron metallurgy, light, lead, metallurgy, mica, mineralogy, pyrites, sulphur in pyrites, sugar, slags, wolfram, preparation of pure gold, scorification, gold bullion assay, petrography, melting poinys of bodies, metric system, geology, mount morgan, queensland, rock salt, assay of tailings, classification of rocks, muffle furnace, ballarat school of mines wind furnace, assay of antinomy, recovery of silver from solutionsheat pyrometer, spectroscope, organic acids, metallurgy of iron, assat of copper, cornstock lode nevada, mount morgan queensland, scarification, elmwood, metallurgy of lead, specific gravity, copper assay, seperation of gold from other metals, test for gold, wet assay, mercury

This Sike’s Hydrometer was donated by the Port Fairy Customs Office as it was no longer required by them due to a change in the law. The hydrometer was part of a system for Ullaging or calculating the amount of liquid remaining in a container of liquor such as a barrel, and the amount of alcoholic content in the contents. It can also measure the free space or head space remaining. Hydrometers were used to measure the density, or relative density, of liquids from the late 1600s. In 1816 Bartholomew Sikes won the competition for the most useful accurate hydrometer. Hydrometers were commonly used by distillers, vintners, and brewers to establish accurate measures of alcohol concentration in their beverages. Following this manufacturing process, government inspectors and excise officers used them to check that the labelled indications of alcohol-proof were correct and that the right amounts of duty were being paid.The Sikes hydrometer is of local significance because of its association with the Government's Customs Office in Port Fairy, in the southwest region of Victoria. It is also associated with Bartholomew Sikes, whose design of a hydrometer was chosen in 1816 as being the most useful and accurate hydrometer. The hydrometer has evolved into the digital version available today to measure density of liquids.Sikes Hydrometer and thermometer in a fitted wooden case with crimson lining inside the lid and dark lining in the base. The case has ten vertical pegs to secure the weights. The brass hydrometer has a spherical float and eight thick brass horseshoe-shaped weights. The serial number is on each section of the float and all weights. Both sides of the float’s upper flat stem have a scale from 0-10, with five divisions between each number. The eight weights are numbered from 20 – 90 in increments of 10. The set includes a mercury thermometer mounted on an ivory back plate labelled with Fahrenheit and Centigrade Scales. The Sikes hydrometer set was made by Loftus of London. The hydrometer model is IID 510, Serial Number is 14674, calibrated by Longs, London. All parts of the float and eight weights are inscribed with Serial Number “14674” The float stem is stamped "SIKE'S IID 51o” Calibrator, "LONG LITTLE TOWER ST LONDON" The weights are numbered individually ”20”, “30”, “40”, “50”, “60”, “70”, “80” or “90” Each weight in inscribed; symbol “(J L) [inside an ova, with textured background]” The thermometer inscribed: “LOFTUS OF LONDON”flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, measuring instruments, customs tax, weighing instrument, sike’s hydrometer, calibrator long of london, loftus of london instrument maker, loftus, j long, sikes hydrometer, scientific instrument, pressure measurement, measuring instrument, ullage tool, customs, excise duty, tax, alcohol content, proof, calibrate, standard weights and measures, tariff, scientific instrument makers, specific gravity, liquid density, alcohol testing, technology, alcohol measurement, proof spirit, wine and spirits merchants, local business, brass measuring instrument, port fairy, customs office, port fairy customs, joseph long, instrument maker

This Sikes brass hydrometer was manufactured by the optical and scientific instrument makers Kasner & Moss of 17 Collins Street West, Melbourne, in the latter part of the nineteenth century. The firm adverted hydrometers, as well as optical instruments, as early as August 13th, 1864, in The Age, Melbourne. This hydrometer set was donated to Flagstaff Hill in 1979 by local wine and spirits merchants Lynch Bros of Fairy Street, Warrnambool. Giffen Russell had established the business in 1878, and Harry Lynch took it over in the 1930s, and after he passed away in 1953 Kevin Matthew Lynch became proprietor of K M Lynch Food and Liquor. The business closed in the 2010s. The hydrometer may date back to the establishment of the business in 1878, as Kasner & Moss were selling hydrometers in Melbourne from 1864. Hydrometers were used to measure the density, or relative density, of liquids from the late 1600s. In 1816 Bartholomew Sikes won the competition for the most useful accurate hydrometer. Hydrometers were commonly used by distillers, vintners, and brewers to establish accurate measures of alcohol concentration in their beverages. Following this manufacturing process, government inspectors and excise officers used them to check that the labelled indications of alcohol-proof were correct and that the right amounts of duty were being paid. This hydrometer and its fitted and hinged wooden container show signs of heavy and protracted use in a working environment. Although the instrument has some parts missing and has been recently repaired, the original quality of the inlaid box and the fine engraving on the instrument and the attachable weights, are indications of the hydrometer’s very real value when new. This Sikes hydrometer, bearing the maker's mark of “Kasner & Moss Melbourne” and the registered number “20373”, was presented to the purchasing public as a precision-made instrument designed for professional use. The Sikes hydrometer is of local significance because of its implied association with the alcohol trade in the southwest region of Victoria. It was donated by a family member of Lynch Bros, a local licensed outlet for wines and spirits in the period before the general relaxation of liquor licensing laws in the State of Victoria. It may have belonged to Griffin Russell who established the liquor store in 1878.Hydrometer; original Sikes brass hydrometer in a polished wooden case with an inlaid plaque on the lid. The brass float is a sphere with a thin flat upper stem and a short, lower stem with a bulb-shaped end. The upper stem is engraved scale on both sides with the numbers 1 to 10, and five divisions between each number. There are ten fixed pegs in the base to secure the thick brass horseshoe-shaped, numbered, various-sized weights (20, 30, 40, 80, 90); the free pegs would have originally stored another five weights (10, 50, 60, 70, and 100). The empty compartment in the box suggests another part in the initial set, probably a thermometer. The fitted, fabric-lined box has two brass closures and two brass hinges. The scientific instrument shows signs of heavy use and repairs. The Serial Number on the float matches the Serial Numbers on the weights. The plaque on the lid, the float and the weights have inscriptions. Made by Kasner & Moss, Melbourne. Plaque: “SIKES HYDROMETER / KASNER & MOSS / MELBOURNE” On float's lower stem: “SIKES 20373” On one thin edge of the float's scale, engraved in script “Kasner & Moss” and stamped “MELBOURNE”, and symbol“P” rotated 90 degrees. On the opposite thin edge of the float: “N20.373”, “SIKES”, “I P % II O” (in ornate capitals). Each weight has s unique number, and the same serial number “20373”.flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, sikes hydrometer, scientific instrument, pressure measurement, measuring instrument, ullage tool, customs, excise duty, tax, alcohol content, proof, calibrate, standard weights and measures, tariff, kasner & moss, scientific instrument makers, specific gravity, liquid density, alcohol testing, technology, alcohol measurement, proof spirit, wine and spirits merchants, local business, brass measuring instrument, k m lynch, giffen russell, harry lynch

The Ballarat School of Mines was the first school of Mines in Australasia, and was established in 1870. It is a predecessor institution of Federation University Australia.Correspondence to the Ballarat School of Mines for the month of July 1908. Letter 162 Ballarat Fine Art Public Gallery Association 19 Lydiard Street North Ballarat, 26th June 1908 Sir, I am directed to inform you that at a meeting of the Council of the above held last evening, your previously acknowledged letter of 11th June 1908, addressted to "E. [Stoer?] Esq, President Late Technical Art School Committee", was received and referred to a committee for its report thereon, cousi directions of which was made are the Order of the Day for the Councils next Ordinary Monthly Meeting. I am, Sir, Your Obedient Servant, J.A. Powell Secretary F.J. Martell Esq Director The Ballarat School of Mines Ballarat ballarat school of mines, frederick martell, ballarat fine art gallery, j.a. powell, art gallery of ballarat, gallery association, charles j. morris, ballarat fine art public gallery association, telegram, c.h. clark, l. ditchburn, alumni, examinations, w.g. taylor, london bank of australia limited, bealiba, thomas r. lyle, jessie chalmers, signor steffani, arundel orchard, w.f. coltman, e.e. hobson, j.t. mooney, queanbeyan, p.e. marmion, willaim m. robertson, assay, e.e. brook, lloyd copper mines, h.b. silberberg & co., education department melbourne, c. james, w. west, haddon, warragul, bakers reef gold mning company, letterhead, victorian portland cement works, d. mitchell, electric lighting and traction co. australia ltd, austral otis engineering comapny ltd, melbourne glass bottle works company, cuming, smith & co. pty ltd, excursions, metropolitan gas company, jaques bros manufacturing engineers, victoria iron works, a. victor leggo co, leggo's metallurgical works, melbourne hydraulic power company limited, mount lyell mining and railway coy ltd, victorian railways, telegraph, land surveying, j. brittain, g. fitzgerald, hamilton, cochran and co, wynne-grant antimony reduction company, mt egerton and gordons mining co, e. hogan, e.c. connell, a.d. galoway, metallurgy, h.b. silberberg, specific gravity balance and weights, union bank of australia (ballarat), bullarto, bush inn, bullarto, w. harrington, prospective student, book donaton from smithsonian institution, e. la t. armstrong, department of mines and forests, melbourne, snake valley, r. hall-jones, c. calaby, clementston, thomas ramsay, w.d. thompson, longmans, green and co, selwyn chase, missionary exhibition, aboriginal court of the missionary exhibition, examination results, leslie coulter, hnery j. saw, thomas ramsay, virgil tucker, leslie c. blick, thomas r. williams, oliver w. williams, thomas r. williams, leo m. seward, david w. bonar, louis w.g. buchner, leo m. seward, albert j. robin, james a. chambers, james d. brokenshire, william kingston, edgar c. hurdsfield, virgil tucker, oliver w. williams, william g. sides, herbert hawkesworth, colin c. corrie, henry j. saw, thomas h. trengrove, thomas r. prigdeon, harold b. herbert, viola p. jackson, lionel s. davies, stanley w. tompkins, arthur m. lilburne

Majority of Galena in Australia is found in hydrothermal deposits emplaced around 1680 million years ago which have been heavily metamorphosed. Galena is the natural mineral form of lead sulfaide. It occurs generally as fine to large crystals due to syntectonic remobilization at low temperatures and moves to a suitable location. The colour is a shining lead and silvery gray with high specific gravity between 7.2 and 7.6 gms/cm3 and contains 86.6 lead sulfaide in its purest form. Its cyrstal system is cubic with perfect cleavages, and contract penetration and lamellar twinning. This particular specimen is from the Broken Hill mine, it is one of the largest lead mines located in Western New South Wales and still has ore reserves amounting to 20.9 million tonnes of ore grading of 7.4% lead, 9.4% zinc, and 61.5 million oz of Silver. Throughout its history, it has produced over 200 million tonnes of ore throughout its 127 years of mining history dating back to 1885. Galena mineral ore found in Australia is considered rare, as it is only currently found in the Broken Hill Mine of Western New South Wales. It represents heritage value through the systematic collecting of the geological surveyers in Victoria and Australia during the early to late 19th Century. The fact that it is only found in one mining area of Australia, shows that this specimen is rare for examples of Australian Galena. This mineral specimen is one part to a larger collection, aquistion, and distribution of Garnet in Galena around Australia and parts of the world and donated to the Burke Museum between 1860-1880. While this specimen was not found by the Victorian Geological Survey, it shows the historical need for mapping geological areas around the Gold Rush region to further identify areas of precious metal and gem aquisition. Additionally, collecting these specimens was an important part of mapping the scientific make up of the earth's surface. Many were sent to institutions for further contribution to research and scientific knowledge of the specimens. A solid coin-sized lead and zinc sulphaide and zinc silicate ore mineral in shades of black and red with shiny black points. GARNET CRYSTALS in / GALENA (lead sulphide), / SPALERITE (zinc sulphide), / WILLEMITE (zinc silicate) ore. / Locality: Broken Hill, NSWburke museum, #beechworth, indigo shire, beechworth museum, geological, geological specimen, mineral, galena, galena quartz, broken hill mine, broken hill, nsw

The Commercial Egg Producers' Association of Victoria was active by the 1930s, engaging in industry management and lobbying.The Commercial Egg Producer's Association (CEPA) had branches in Bendigo, South Bendigo, Eaglehawk, Wedderburn, Murrabit and Euroa.CEPA Commercial Egg Producer's Association (Bendigo Region) correspondence, for the year 1987. This item includes the following documents: 8504.43a Victorian Egg Board 1986-1987 Report - 28 pages 8504.43b Key points to the Egg Producers Association's letter regarding the Public Bodies Review Committee Report, The Association largely supports the Report, with a few exceptions 8504.43c From Egg Farmers of Victoria. Introduction of Shell Thickness StandardA new minimum shell thickness standard (0.325 mm, measured by Specific Gravity) will be introduced to improve egg quality and reduce breakage.The standard is part of a 5-year plan to upgrade shell egg quality standards.Benefits for Producers and Consumers 8504.43d The Public Bodies Review Committee is holding a public hearing on Thursday, 22 October 1987 at 10:00 a.m. at their Melbourne offices. 8504.43e The Public Bodies Review Committee acknowledges receipt of a letter from the Commercial Egg Producers' Association of Victoria, which included supporting correspondence regarding the Committee's Inquiry into the Egg Industry. 8504.43f Formal notice by the Victorian Prices Commissioner regarding the planned review of egg prices and industry conditions in Victoria for 1987. The Prices Commissioner intends to conduct a further review of Victorian egg prices, to be completed in the second half of 1987. 8504.43g From the Egg Farmers of Victoria circular re the Commonwealth Hen Levy 8504.43h From the Egg Farmers of Victoria circular re Permit Hens for local egg products 8504.43i This document is a formal response from the Victorian Egg Marketing Board to the Commercial Egg Producers Association regarding egg pricing and policy issues. 8504.43j Victorian and New South Wales Ministers of Agriculture have announced a new company. Good Food Products Australia Pty. Ltd. is initially wholly owned by the New South Wales Egg Corporation and the Victorian Egg Marketing Board. 8504.43k From Egg Farmers of Victoria. Food Products Australia Pty. Ltd. has been established as a proprietary limited company.Ownership is split: New South Wales Egg Corporation holds 55% and Victorian Egg Marketing Board holds 45%, based on quota.Legal documents have been signed and executed by both Boards. 8504.43l Circulars from the Egg Farmers of Victoria 8504.43m From Crystal Industries, summary of Egg washing at a grading facility which provide several key benefits for poultry farmers. 8504.43n This document is a formal letter from the Victorian Egg Marketing Board to the Secretary of the Commercial Egg Producers' Association. The Board is forwarding a letter from Mr. B.D. Croke, V.C.A.H., to the Association.The Board considers that letters of support are best provided by individuals who are familiar with the relevant course or have participated in it.The letter is signed by the Secretary of the Victorian Egg Marketing Board and includes standard contact information. 8504.43o This document is an official notice from the Department of Agriculture and Rural Affairs, inviting individuals and organizations to prepare deputations for meetings with Victorian Ministers during their visit to Bendigo on October 15-16, 1987. 8504.43p Newspaper Article. New Zealand's poultry and egg industry, highlights the transition from a tightly regulated system to a free market and its immediate effects 8504.43q Letter to the Minister for Agriculture and Rural Affairs re the Public Bodies Review Committee report to the Victorian Egg Marketing Board. 8504.43r Letter to the Egg Farmers of Victoria. The document discusses issues related to grading systems, including the possibility of returning to an old grading method and the challenges of differentiating grades across various programs. 8504.43s To the Egg Farmer of Victoria. The Association is formally requesting the installation of a washing machine at the Crystal Grading Floor in Bendigo. All producers are expected to contribute to the purchase, ensuring equal privilege for both metropolitan and country producers. 8504.43t To the Public Bodies Review Committee. CEPAr expresses strong support for maintaining the quota system in the egg industry. 8504.43u The document is a formal letter from the Commercial Egg Producers' Association outlining several key concerns and requests: The Association asks the Rural Affairs Committee of the State Parliament to receive a deputation of four members to discuss the future of the egg industry. 8504.43v To the Egg farmers of Victoria. CEPA request the immediate rise in the price of eggs. 8504.43w To Alan Fels, Price Commissioner re egg prices. 8504.43x To Alan Fels, Price Commissioner re egg prices. The Commercial Egg Producers' Association is involved in the Egg Production Committee and emphasizes that their cost figures are more accurate than those used in previous profitability assessments. The association believes the Minister's criteria for efficiency are reasonable but disagrees with the method for determining efficient producers. 8504.43y This document presents the position of the Central Council of the Commercial Egg Producers' Association of Victoria regarding regulatory changes in the egg industry, with a focus on experiences in New Zealand and implications for Victoria. 8504.43z The document is a formal letter from CEPA submitting a panel of candidate names for the position of Producer Member on the Victorian Egg Marketing Board. Contact BHS for details. 8504.43aa From CEPA The document outlines concerns from Victorian egg producers regarding pricing policies and cost calculations affecting their industry:Critique of the Pro Fels Report. The report defines an 'efficient' egg producer as one with at least 20,000 hens in a controlled environment, which does not reflect the reality for most local farms. Cost calculations in the report are based on this model, ignoring the fact that many farms operate with fewer hens and older facilities.Labour and interest rates used in the report are not representative of actual conditions. 8504.43ab The document is a letter from the Commercial Egg Producers Association to the Egg Farmers of Victoria, addressing concerns about a proposed change to quota levies for pullets. 8504.43ac CEPA annual Conference minutes May 1987 8504.43ad From the Rural Water Commission. The Coliban System OverviewSupplies water to approximately 2,075 rural properties for domestic, stock, and irrigation purposes. It Utilizes an extensive channel and piped system. Findings from the Coliban Rural Water Study: Increased maintenance is needed for the rural water supply system. Rising water demand is reducing the system's drought security. Additional revenue is required to maintain and improve drought security and operational efficiency. 8504.43ae Two pages of handwritten letter along with an objection to membership - contact BHS for detailsegg producer's information, correspondence, cepa, commercial egg producers' association