Documents: brown manila folder. On front 'South Deborah Gold Mines NL. Machinery File' Contains letters and documents secured within folder with binder, from T.J. Jorgensen, consulting engineer and contractor, F.W. Milne & Son, General Engineers, Ministry of Munitions, Holland Bros.., Thompsons Engineering & Pipe Co., Castlemaine. All documents relate to provision of machinery work at the Deborah Gold Mines. Attached is a selection from the folder.variousorganization, mining, south deborah gold mines nl, mccoll, rankin and stanistreet: south deborah gold mines nl, t.j. jorgensen, f.w. milne & son, thompsons engineering & pipe co., gold mining, engineers, machinery

Hand written copy of Specifications of One - Two Stage Horizontal Air Compressor and Intercooler (with Belt Drive) by Thompson's Engineering & Pipe Co. Ltd., Castlemaine per Mr. T. J. Jorgenson, Consulting Engineer. Dated 22/5/45. Detailed description of the air compressor.mine, gold, central deborah gold mine, central deborah gold mine, air compressor, mr. t. j. jorgenson, thompson's engineering & pipe co. ltd.

Siemens DC generator driven by a Thompsons two cylinder steam engine. The engine has vertical cylinders and there is a flywheel between the generator and engine. Generator painted grey, engine painted red. The system is connected to low pressure steam and can be run very slowly. Brass plate on generator "Siemens Brothers / Dynamo Works Ltd. / London Stafford / Direct Current Generator", followed by specifications. Thompsons Engineering in relief on steam engine side plates. "60" on base of engine.machinery; generator; steam engine; metalwork

By referring to Cat No 7237.2 will bring up all items associated with Thompsons. Two sheets of paper from Thompson Engineering & Pipe Co. Ltd. To Ordnance Factory Maribyrnong Dated 18/8/43. Signed off by (??) Martin. 1. Results for tests on roller paths for 3.7 AA Guns (Batch 15). 2. Results for tests on roller paths for 3.7AA guns (Batch 9). Signed off by (??) Martin.3.7"aa guns, ord factory maribyrnong, thompsons castlemaine

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.Single sheet of paper. Tests on material for 150 Breech blocks for QF 17 PDR Guns. From: Thompson's Engineering & Pipe Co. Ltd. dated 19/10/1942. To: Ministry of Munitions A/C Ordnance Factory Maribyrnong. The tests cover Breech Blocks. (1508 - 1513) (1542 - 1547) (1554 - 1559) (1560 - 1565) (1571 - 1575) (1582 - 1587) Signed off at bottom by (??) Martin.17 pdr a/tn gun, steel testing, ww2

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.Two sheets of test results. They are from Thompsons Engineering & Pipe Co to Ordnance Factory, Maribyrnong. They are signed off by (??) Martin. 1. Test sheet for Breech blocks 17 PDR Block Nos 1560-1565, Dated 21/9/43. 2. Test sheet for Breech blocks 17 PDR Block No's 1554 - 1559. Dated 21/9/43.gun barrels, 17 pdr, mechanical testing, thompsons castlemaine, ord factory maribyrning.

By referring to Cat No 7237.2 will bring up all items associated with Thompsons. 2 sheets of paper from Thompson Engineering & Pipe Co Ltd, signed by (??) Martin. 1. 25 PDR Breech rings No's 2671-2673. To Chas Ruwoldt Pty Ltd, A/C Ministry of Munitions. Dated 9/12/43. 2. 25 PDR Axles. No. 870-877-882-883. To Chas Ruwoldt Pty Ltd Ministry of Munitions. Dated 9/2/1944.25 pdr guns, chas ruwoldt p/l, thompsons castlemaine

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.This is a set of 3 sheets of steel tests on 6 PDR anti-tank gun tests. From Thompsons Engineering & Pipe Co. Lt Castlemaine to General Motors Holden, South Aust A/C Ministry of Munitions. 1. Barrel NRS 2483 - 2484 - 2498 - 2499 - Dated 1943. 2. Barrel NRS 1809 - 1812 - 1826 - 1827 - Dated 1942. 3. Barrel NRS 1876 - 1877 - 1859 - 1871 - Dated 1943.Signed off by (?) Martin.gun barrel tests, pdr anti- tank.

.1) Hinged lid wooden box with brass fittings and green felt covered rests inside. .2) "Fuller" type circular slide rule calculator Model No. 1. .3) Brass stand which slots into one end of box and holds calculator in position for ease of use. .4 ...7) Instruction booklets for operating the calculator. .8) Letter from importer re enquiry for circular slide rules to be used at Thompsons Engineering and Pipe Works.Imprinted on bakelite base of cylinder "Stanley / Trade Mark".trades, drafting, instruments, measuring

By referring to Cat No 7237.2 this will bring up all associated items with Thompsons.This is a set of nine pages of steel, marine engine parts and naval gun parts - testing. The sheets have the letterhead of Thompsons Engineering and Pipe Co Ltd., Castlemaine. The results are to the Commonwealth of Australia 1 - 4. Marine Engine Parts. Dated 1945- 46 5 - 6. 4" Naval gun parts tests. Dated 1942. 7. Corvette Marine engine parts. Dated 1942. 8. Breach blocks for CQF M4 XIX ?? Dated 1942. 9. Tensile & bend tests Steel. Dated 1942.steel testing, marine engine parts

By referring to Cat No 7237.2 will bring all items associated with Thompsons.1. Single sheet of paper. From Thompson's Engineering & Pipe Co Ltd to Ordnance Factory Maribyrnong. A/c Ministry of Munitions. Titled - mechanical tests - Test on 25 PDR Breech rings. Rings NR (1790-1793). Dated 26 March 1943. 2. Tensile tests on material for 95 (loose) Barrel forgings for 25 PDR Gun Howitzers. From Thompson's to Commonwealth of Australia - Ministry of Munitions. Barrel 14236/1 (Y2) - Barrel 635/3 - Dated 18 Feb 1942.1. Top has name "Mr. Johnson" written. In the middle is an unidentifiable signature dated 26-3-1943. Bottom has (??) Martin. 2. At bottom signed off by (??) Martin.25 pdr, thompson's castlemaine, ordnance factory maribyrnong.

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.There are 8 sheets of test results for various heavy machinery. From Thompson's Engineering & Pipe Co. Ltd. 1. - 2. To C of A - Ord Factory Bendigo - Dated 1942 & 1943. 3. To Ord Factory Maribyrnong Dated 1944. 4. To Chas Ruwoldt Pty Ltd Dated 1945. 5. To C of A O.F.M (Maribyrnong) Dated 1945. 6. To Chas Ruwoldt Pty Ltd. Dated 1945 7. To Chas Ruwoldt Dated 1945. 8. To Ord Factory Bendigo. A/c Commonwealth of Aust. Dated 1945.Most have been signed off by (??) Martin. .5 has a red note - to be renormalised at 8.30c J. Adams 8/8/44.thompsons castlemaine, test results, ww2

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.These are typed copies of work documents. They are on a lightweight pink paper. They are from Thompson's Engineering to the Bendigo Ordnance factory, Naval Dept. 1. Dated 7 Oct 1942 for tests on breech ring billed in "D" steel contract MON1775. 2. Dated 13 Oct 1942 for tests on Gun metal castings 4"Naval Guns, and Class "D " stee4l for breech rings for 4" Naval Guns. 3. Dated 29 Oct 1942. Test on gunmetal castings. 4. Dated 4 Nov 1942. Tests covered by 3 particular contracts. 5. Dated 25 Nov 1942, For Mechanical tests on a spcific contract. 2.3. & 5. Rubber stamp of a signature - illegibleww2, cannons, manufacture

Black folder containing photocopied documents pertaining to the setting up and running of the Central Deborah Mine, Bendigo. 1939 - 1948. Original copies held in McColl,Rankin & Stanistreet Collection. Application for Permit. Ministry of Post War Reconstruction. War Organisation of Industry. Quotes, Tenders. Hume & Iser. T.J Jorgensen. Electricity Supply Department. Saunders & Ross. District Telephone Office. R Toma. Stock Exchange. Building Site Plan. Abbott Supply Co. F.W. Milne & Son. The Golden City Agricultural Implements. Department of Labour and National Service.Miller & Co. Thompson Engineering and Pipe Co. Gold Boring and Prospecting. Costs. J.l. Howard. A.J. William Electrical Instruments.bendigo, mining, central deborah gold mine

By referring to Cat No 7237.2 will bring up all items associated with Thompsons.These are four test results on 6 PDR Barrels. They are from Thompson's Engineering and Pipe Co Ltd. 1. Polster barrels converted from 6 PDR Barrels dated 16/ 11/ 43. To General Motors Holden Ltd. Polster barrels No's 3083- 3085, 3087, 3090, 3091. Signed off by (??) Martin. 2. Bofor Barrel converted from 6 PDR Barrel. Dated 25/11/43. To Ord Factory Maribyrnong. Barrell No. V1589/1. 3. 6 PDR Barrel No. 3243. Dated 8/12/43. To General Motors Holden Ltd. Signed by (??) Martin. 4. Bofor Barrel converted from 6 PDR Barrel Dated 10/12/43. To Ord Factory Maribyrnong. Signed off by (??) Martin.gun barrels, testing, ord factory maribyrnong, general motors holden

Photograph. Cornish Collection - visit of Bendigo mine managers to Thompson's Engineering Works, Castlemaine. Article (undated) from Bendigo Advertiser (?) re visit one hundred years ago - with photos of 14 men with part of Thompson & Co brick building in background: : Mr Hicks (Red, White and Blue); Mr Glanville (Hustlers Royal Reserve); Mr Kidd (Shamrock Co.0; Mr Hollow (South Bellevue); Mr Rowe (new Chum Rail); Mr Jas Northcote (Lansell's general manager); Mr Edward (Fortuna-Hustlers); Mr Prior (Garden Gully); Mr J Lonsdale (Shenandoah); Mr Whitford (Lazarus Co,); Mr Harvey (New Chum United); Mr Bradshaw (electrical engineering); Mr Lonsdale (Lazarus Co.); Mr L B McGrath (Thompson's representative).bendigo, gold mining, miners

Pink Manilla Folder containing: General Correspondance Letters to and from suppliers of machinery and parts e.g. Electricity Supply Departments, Fred Milne & Son (Engineers), Thompsons Engineering & Pipe Co.Ltd, Miller & Co Machinery Pty Ltd, Alfred J Jorgenson, Bingle Machinery Co, The Richardson Gears Pty Ltd, Buckell & Jeffrey Pty Ltd, Commercial Union Assuarance Company Limited, Bendigo Machinery & Trading Co Pty Ltd, Ronaldson Bros & Tippett Pty Ltd (including a picture of a drawlift pump), J.G. Bloomfield, Ronaldson - Tippett list of 4583 Machines in Victoria & addfor crude oil engine, A.H McDonald & Co Pty Ltd & ad for crude oil engine, E Treliving letter & list of second hand materials for sale, J. Edwards-Retallack Machinery Manufacturers Representative, Hume & Iser Pty Ltd Timber & Hardware Merchants, Bendigo Timber Co Timber & Hardware Merchants, markings read 'Cent. Napoleon G.M.Co N.L Machinery', Correspondance dating from 16 July 1934 - 26 October 1950.organization, business, industrial - mining, mccoll rankin & stanistreet, mining, gold mining, central napoleon

George Milford, a long term staff member of Thompsons Foundry Castlemaine, remembers discussing Alexander Sinclair with this son, Alex Sinclair Jnr. "When Alex Jnr was a boy, his father, a senior design engineer, was sent to Malaya to oversee the erection on site of a suction cutter dredge for Thompsons. This was an adaptation of the idea of a bucket-dredge, where gold is won from alluvial gravels. In the 1915-1920 era, the Thompsons Engineering Department designed a suction-cutter dredge, by which hydraulic suction with a revolving cutter at the end of a long proboscis would collect the alluvial soil and deliver it into the dredge for recovery of the precious metals. Export marketing was then ‘all the go’, and the tin dredges were ordered from Thompsons, using the new cutter design. The dredges were, of course, shipped to Malaya in pieces, ready to be assembled on site. A number of Thompsons employees were selected to travel to Malaya to assemble the dredges. There were fourteen men in the gang. These men sailed on 1st July 1925, their number including Delmenico, McKay and Charles Albert Hauser, an engine driver. C A Hauser died of malaria in Malaya shortly after arrival. Components for a further three of these dredges were in transit or on site when the first suction-cutter dredge was assembled and tested. The designers had failed to take into account the fact that, in the jungle floor in Malaya, many trees grow up, and fall down, in tropical conditions, and become submerged still waterlogged in the floor of the jungle, and in the tin-bearing gravels. The suction-cutter dredge was found to be inefficient in these circumstances, the price of tin had fallen and the Malayan client reneged on the contract. Faced with an outlay of over £4,000 on which no money would be received, the company went bankrupt on 25th August 1925. Alex Sinclair Snr was at that stage in Malaya, and received the news of the bankruptcy by telegram. Upon telegraphing his employers for funds to return home, he received the reply that there were no such funds available. Alex Sinclair Jnr told the story of how his father worked as a labourer in Malaya for two years, while his mother took in washing and ironing during the same period, until together they had assembled enough money to pay for his father’s return Anyone who talks about “the good old days” is talking nonsense!"Large blue printed paper plan outlining the conditions of contract for the making of a steel boiler. The Blueprint includes design drawings and written contract specifying materials, time frame and costs. Signed on front 'Alec Sinclair Consulting Engineer, 31 Queen Street, Melbourne'. Stamped on verso 'Printed by Paterson & Co, Colonial Mutual Chambers, Collins St, Melbourne'. blueprint, designs and plans, yarrawee suction dredge, conditions of contract, thompsons foundry castlemaine, george milford

The photo from 1907-8 is a sepia print, depicting a small valley with building at base. There are flumes visible above areas of water, trees on hills and a few small cottages on the hillside. Cock's Pioneer Gold & Tin Sluicing Co NZ No 2 Site. The photo was taken of Matthews Gully looking west. Sluicing was undertaken in the area from 1900 to 1942 with some short breaks between these periods. The image depicts a location mined by Cocks Pioneer Gold and Tin Sluicing Company (as recorded on the annotation on the card mount) The Cocks Pioneer Gold and Tin Mines N.L was one of El Dorado's two largest open cut sluicing mines of the 20th Century. The other was named the Cocks El Dorado Gold Dredging Company. The Cocks Pioneer Mines operated from 1901 until 1941 and found a total of 117,378 ounces of Gold and 1,673 tones of tin concentrates over these years. The Cocks company was formed in 1898 and operated until 1941. Open cut sluicing involved the use of high-powered hoses which used the centrifugal sand pump system (known as hydraulic sluicing) which broke down the soil which was then processed for gold and other precious metals. From 1914 , four years after this image was captured, the company reformed to Cocks Pioneer Gold and Tin Mines NL (previously it was known as Cocks Pioneer Sluicing Co) and undertook large scale sluicing operations until 1929 and then 1934-1941. El Dorado is located on Reedy Creek and is surrounded by forested country to the north and east. It is 20 km east of Wangaratta in Victoria's regional north-east. John Cock was the son of a Cornish minor who arrived in El Dorado in 1858. Cock founded his gold and tin mining company which ran successfully for many years in the El Dorado region. It was an open cut sluicing company because of the abandonment of underground mining after this was deemed too dangerous. In 1935 Cock's El Dorado Company commissioned the floating dredge which is still visible in El Dorado today. The dredge was built by the Thompson engineering works, Castlemaine, and weighed over 2,000 tones and today has a place on the Victorian Registers of historic buildings. Interestingly, the name El Dorado does not derive from the gold in the region, but from the Barambogie pastoral run completed by William Baker in 1840-1841. Gold was discovered in El Dorado 1854 but the gold was too deep for individual prospectors to find, it required the use of heavy machinery.The search for gold is ingrained into the history of Victoria and therefore, images like this one which portray an open cut sluicing site can reveal important information for society and technology for the date when the photograph was taken. This image is of important historical significance for its ability to convey information about sluicing and the methods used to find gold in 1910. It also shows a location where sluicing was undertook which provides insight into the impact of sluicing on the environment at a time when it was done. This image is important for current research into the history of El Dorado, a small regional location near Wangaratta in Victoria's North East. Therefore, this image has the capacity to be beneficial for research into society and the motivations of those living and working in this region during this period and therefore, has social significance. The Beechworth Burke Museum has additional images relating to gold sluicing and El Dorado which can be analysed and studied alongside images like this one.Sepia coloured rectangle photograph printed on gloss photographic paper Reverse: 1997. 2613/ A02613/ No2 site/ Matthews Gully/ Cocks Pioneer G&T. ?? Co NZ/ No2 Site looking West/ 1907-8/ (7)sluicing, hydraulic sluicing, 1907, 1908, mining, cock's pioneer gold & tin sluicing co nz, nz, site no 2, matthews gully, west, valley, building, cottages, hillside, trees, water, gold and tin mine

This photograph depicts Cock's Pioneer G & T Sluicing site No. 4 in El Dorado. Looking eastwards, the photo captures a wooden and tin building with various mining equipment strewn in the foreground. Underneath the verandah, figures can be seen. These are believed to be a Mr. Hollister (left), Mrs. Breustedt (4th from left), children Min and Chris Breustedt, and Kate Timmons holding a girl's hand. The Cocks Pioneer Gold and Tin Mines N.L was one of El Dorado's two largest open-cut sluicing mines of the 20th Century. The other was named the Cocks El Dorado Gold Dredging Company. The Cocks Pioneer Mines operated from 1901 until 1941 and found a total of 117,378 ounces of Gold and 1,673 tones of tin concentrates over these years. The Cocks company was formed in 1898 and operated until 1941. Open cut sluicing involved the use of high-powered hoses which used the centrifugal sand pump system (known as hydraulic sluicing) which broke down the soil which was then processed for gold and other precious metals. From 1914, four years after this image was captured, the company reformed to Cocks Pioneer Gold and Tin Mines NL (previously it was known as Cocks Pioneer Sluicing Co) and undertook large-scale sluicing operations until 1929 and then 1934-1941. The Cocks Pioneer was an extremely successful mining company during the 20th century. In the Annual Report of the Secretary for Mines for the year 1915, the Cocks Pioneer was the largest producer of gold and tin collecting 5,535 ozs. of gold and £7,500 of tin. Twenty years later in 1935, Cocks Pioneer was still one of the most profitable mines in Victoria, ranking as the second-highest dividend paying mine. The company produced a total of 3,650 kg of gold. El Dorado is located on Reedy Creek and is surrounded by forested country to the north and east. It is 20 km east of Wangaratta in Victoria's regional northeast. John Cock was the son of a Cornish miner who arrived in El Dorado in 1858. Cock founded his gold and tin mining company which ran successfully for many years in the El Dorado region. It was an open-cut sluicing company because of the abandonment of underground mining after this was deemed too dangerous. In 1935 Cock's El Dorado Company commissioned the floating dredge which is still visible in El Dorado today. The dredge was built by the Thompson engineering works, Castlemaine, and weighed over 2,000 tones and today has a place on the Victorian Registers of historic buildings. Interestingly, the name El Dorado does not derive from the gold in the region, but from the Barambogie pastoral run completed by William Baker in 1840-1841. Gold was discovered in El Dorado in 1854 but the gold was too deep for individual prospectors to find, it required the use of heavy machinery.The search for gold is ingrained into the history of Victoria and therefore, images like this one which portray an open cut sluicing site can reveal important information for society and technology for the date when the photograph was taken. This image is of important historical significance for its ability to convey information about sluicing and the methods used to find gold in 1910. It also shows a location where sluicing was undertook which provides insight into the impact of sluicing on the environment at a time when it was done. This image is important for current research into the history of El Dorado, a small regional location near Wangaratta in Victoria's North East. Therefore, this image has the capacity to be beneficial for research into society and the motivations of those living and working in this region during this period and therefore, has social significance. The Beechworth Burke Museum has additional images relating to gold sluicing and El Dorado which can be analysed and studied alongside images like this one.A black and white copy of a sepia coloured rectangular photograph printed on matte photographic paper mounted on boardObverse: COCKS PIONEER G + T SL CO, N.L. / 1910 - 11 / NO 4 SITE LOOKING EAST / 4 Reverse: 1997.2508 / AUG 29 1909cocks pioneer gold and tin sluicing company, el dorado, mining, sluicing, hydraulic mining, hollister, breustedt, timmons, gold, tin, gold rush, victoria

This photograph dating to 1910 depicts an open cut sluicing site located in El Dorado captured looking east up the open cut from the number 3 Barge site. Sluicing was undertaken in the area from 1900 to 1942 with some short breaks between these periods. The image depicts a location mined by Cocks Pioneer Gold and Tin Sluicing Company (as recorded on the annotation on the card mount). It portrays open cut rocks with a crevice in the center of the image where the sluicing was being undertaken. There is a small timber structure on the right of the image which could be an entrance to a mine or supports made of wood to prevent a cave in at the open cut site and above the cut rock there is bush. The timber structure has rail tracks on top of the bridge which could suggest the identification of this structure as a mine entrance. The rail tracks were used for little carts which hauled soil from the mine. The Cocks Pioneer Gold and Tin Mines N.L was one of El Dorado's two largest open cut sluicing mines of the 20th Century. The other was named the Cocks El Dorado Gold Dredging Company. The Cocks Pioneer Mines operated from 1901 until 1941 and found a total of 117,378 ounces of Gold and 1,673 tones of tin concentrates over these years. The Cocks company was formed in 1898 and operated until 1941. Open cut sluicing involved the use of high-powered hoses which used the centrifugal sand pump system (known as hydraulic sluicing) which broke down the soil which was then processed for gold and other precious metals. From 1914 , four years after this image was captured, the company reformed to Cocks Pioneer Gold and Tin Mines NL (previously it was known as Cocks Pioneer Sluicing Co) and undertook large scale sluicing operations until 1929 and then 1934-1941. El Dorado is located on Reedy Creek and is surrounded by forested country to the north and east. It is 20 km east of Wangaratta in Victoria's regional north-east. John Cock was the son of a Cornish minor who arrived in El Dorado in 1858. Cock founded his gold and tin mining company which ran successfully for many years in the El Dorado region. It was an open cut sluicing company because of the abandonment of underground mining after this was deemed too dangerous. In 1935 Cock's El Dorado Company commissioned the floating dredge which is still visible in El Dorado today. The dredge was built by the Thompson engineering works, Castlemaine, and weighed over 2,000 tones and today has a place on the Victorian Registers of historic buildings. Interestingly, the name El Dorado does not derive from the gold in the region, but from the Barambogie pastoral run completed by William Baker in 1840-1841. Gold was discovered in El Dorado 1854 but the gold was too deep for individual prospectors to find, it required the use of heavy machinery.The search for gold is ingrained into the history of Victoria and therefore, images like this one which portray an open cut sluicing site can reveal important information for society and technology for the date when the photograph was taken. This image is of important historical significance for its ability to convey information about sluicing and the methods used to find gold in 1910. It also shows a location where sluicing was undertook which provides insight into the impact of sluicing on the environment at a time when it was done. This image is important for current research into the history of El Dorado, a small regional location near Wangaratta in Victoria's North East. Therefore, this image has the capacity to be beneficial for research into society and the motivations of those living and working in this region during this period and therefore, has social significance. The Beechworth Burke Museum has additional images relating to gold sluicing and El Dorado which can be analysed and studied alongside images like this one.Sepia coloured rectangular photograph printed on gloss photographic paper mounted on board.Obverse: COCKS PIONEER Q + T SL CO, N.L. / 1910 / LOOKING EAST UP OPEN CUT / FROM NO3 BARGE SITE / Reverse: 1997 . 2611 / A02611el dorado, north east gold, sluicing, gold sluicing, hydraulic sluicing, 1910, gold and tin mine, open cut mining, mining, gold mining, north-east victoria, beechworth, burke museum

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This is a set of 16 photograph of the Royal Australian Survey Corps’ Johnson Ground Elevation Meter (JGEM) Survey Vehicle taken at the Army Survey Regiment, Fortuna, Bendigo. The JGEM vehicle was extensively used by RA Svy within Australia from the late 1960s. A limited number of Ground Elevation Meter (GEM) station wagon type vehicles were manufactured by General Motors Corporation (GMC) in the USA for the United States Geological Survey, Canada’s mapping agencies, RA Svy and National Mapping (Natmap). The GEM was a four-wheel drive, four-wheel steer vehicle. Four-wheel steering was necessary to avoid systematic errors caused by non-tracking of front and rear wheels on conventionally steered vehicles. The manufacturer substituted the rear axle with a front axle and connected them to form the four-wheel steering mechanism. The two Australian GEM vehicles, referred to as Johnson GEMs (JGEMs) were converted into right-hand drive. After delivery in 1964, acceptance Natmap and RA Svy testing and operator training was undertaken at the Army's School of Military Survey located at Balcombe, Victoria. A small fifth wheel was mounted on a cantilever arm suspension midway between the front and rear wheels on the right side of the vehicle. It was lowered to and raised from its operating position by use of a constant pressure air cylinder. A telescopic bar, suspended between the front and rear axles, provided the reference datum for the angle measurement. The wheel provided the velocity or distance signal through a pulse generator system. A sensitive pendulum mounted on this bar provided the angle measurement for each minute distance traversed. The JGEM contained electromechanical instruments used to determine relative elevations, by trigonometric principles, along a traversed path. These relative elevations were obtained through apparatus which measures the instantaneous angle of inclination of the road and the instantaneous velocity of the meter along such a path. Road routes over which the JGEM operated were planned so that each started and ended as near as practicable to an existing point of known elevation (formally referred to as a level traverse bench mark). The difference in height from the bench mark and the road surface alongside the JGEM’s fifth wheel was measured with a level and staff. Along each route, mapping control photo reference points where new elevation values were required were identified on aerial photographs. Under favourable conditions it was possible to survey as much as 160km in an ordinary working day. The first of RA Svy’s JGEM operations was undertaken in 1:250,000 scale map areas of Queensland. CPL John Hook was the JGEM’s main operator in the early 1970s undertaking operations covering 1:250,000 scale map blocks over northern Victoria and central NSW, each requiring 36 points (9 runs of photography and 4 points across. SPR Lyn Thompson and SPR Bob McDonagh teamed with CPL Hook on some of these JGEM operations. When RA Svy was integrated into the Royal Australian Engineers in 1996, the JGEM vehicle with the Survey Corps collection was donated to its museum. It is believed to be the last of the original manufactured fleet in existence. The JGEM has undergone extensive refurbishment to achieve roadworthiness and is currently housed at The Australian Army Museum of Military Engineering, Hoslworthy Barracks, NSW. It can be viewed by making an appointment with the museum’s curator.This is a set of 16 photograph of the Royal Australian Survey Corps’ Johnson Ground Elevation Meter (JGEM) Survey Vehicle taken at the Army Survey Regiment, Fortuna, Bendigo. The photographs were on 35mm slide film and were scanned at 96 dpi. They are part of the Army Survey Regiment’s Collection. .1) - Photo, colour, c1960s, Johnson Ground Elevation Meter (JGEM) Survey Vehicle .2) - Photo, colour, c1960s, JGEM instrumentation, on-board computer. .3) - Photo, colour, c1960s, JGEM instrumentation. .4) - Photo, colour, c1960s, JGEM instrumentation, on-board computer. .5) - Photo, colour, c1960s, JGEM tyre pressure controller .6) - Photo, colour, c1960s, JGEM rear doors, SGT Geoff Briggs. .7) - Photo, colour, c1960s, JGEM 5th wheel distance/angle measurement device in lowered position, SGT Geoff Briggs. .8) - Photo, colour, c1960s, JGEM 5th wheel distance/angle measurement device in lowered position. .9) & .10) - Photo, colour, c1960s, JGEM tyre pressure system, SGT Geoff Briggs. .11) - Photo, colour, c1960s, JGEM tyre pressure system. SGT Geoff Briggs. .12) - Photo, colour, c1960s, JGEM levelling scope, levelling staff, unidentified technicians. .13) & .14) - Photo, colour, c1960s, JGEM levelling scope, unidentified technician. .15) & .16) - Photo, colour, c1960s, probably survey operation adjusted height plotted on block base sheet. .1P to .16P - Some of the equipment is annotated on the frame of the 35mm slides.royal australian survey corps, rasvy, army survey regiment, army svy regt, fortuna, asr, surveying

One of a series of images of roads and infrastructure taken by Eltham Shire Council Planning and Engineering officers, May 1983 specifically looking at road conditions and drainage in Research (Vic.) around Thompson Crescent.35 mm colour positive transparency (1 of 11) Mount - Kodak Kodachrome Cardroads, infrastructure, research (vic.), thompson crescent