Showing 13 items
matching bedrock
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Lakes Entrance Regional Historical Society (operating as Lakes Entrance History Centre & Museum)
Book, Fairweather, Keith McD, Bedrock, 1986
Mining in the Deptford and Bulumwaal districts of Gippsland, Victoria. Nominal index. Illustrated with photographs and maps. Reprint.mines and mining, township, settlers -
Hand Tool Preservation Association of Australia Inc
Plane
This item is part of the Thomas Caine Tool Collection, owned by The National Trust of Australia (Victoria) and curated by the Hand Tools Preservation Association of Australia.plane, metal, bench, 608 bedrock -
Eltham District Historical Society Inc
Photograph, Rocky Outcrop
A rural location with a visible exposure of bedrock surrounded by vegetation and trees. A rock exposed high hill is in the background. The location and artist are unidentified. The location is reminscent of Hanging Rock, Woodend.This photo forms part of a collection of photographs gathered by the Shire of Eltham for their centenary project book, "Pioneers and Painters: 100 years of the Shire of Eltham" by Alan Marshall (1971). The collection of over 500 images is held in partnership between Eltham District Historical Society and Yarra Plenty Regional Library (Eltham Library) and is now formally known as 'The Shire of Eltham Pioneers Photograph Collection.' It is significant in being the first community sourced collection representing the places and people of the Shire's first one hundred years.Digital imagesepp, shire of eltham pioneers photograph collection, other areas, rocks, bedrock, unknown -
Bendigo Historical Society Inc.
Memorabilia - GOLD NUGGET COLLECTION: THE GEM, 1906
The Gem The Poseidon Rush. Tarnagulla, Saturday. Article - The Albury Banner and Wodonga Express (NSW : 1871 - 1938)Friday 8 February 1907 - Page 43 The Poseidon Rush. Tarnagulla, Saturday. Several indicators and quartz leaders on the Woolshed Hill have received considerable attention during the last fortnight. In some claims the stone looks very promising, and nice tracings of gold have been obtained. Wragg Brothers struck it rich yesterday. At a depth of 12ft. on the bedrock they discovered a nugget specimen 206oz. in weight, which has been christened the 'Port Arthur. The party also had the good fortune to find two other specimens close, by, one weighing 23oz. 15dwt. and the other 24oz.These were named 'The Twins,' the Wragg Brothers bearing that distinction. In this claim about eight weeks ago the Gem (88oz.) was unearthed. THE POSEIDON RUSH. Article Illustrated - Leader (Melbourne, Vic. : 1862 - 1918, 1935)Saturday 29 December 1906 - Page 33 THE POSEIDON RUSH. It is only about five weeks since this rush was opened by John Porter, but since that time a marvellous change has taken place. The quietness of the bush has given place to a scene of wild excitement, and each week this is intensified by the discovery of large nuggets. When Smith, Rogers and Stephenson picked out their slug on election day, no one dreamed that larger ones were lying only a few feet away, but such was the fact. On Tuesday afternoon two immense slugs, one of which weighed 960 oz., and the other 373 oz., were found in adjoining claims within a few minutes of each other. The finding of these created a scene which it is difficult to describe. "I've got one, “was shouted from the claim of Bert Williamson and T. Stephenson, two men just entering into manhood. They were seen excitedly digging round a lump of gold, one of them with a double-ended pick, the point-of which he broke in his anxiety to unearth it. This slug is nine inches long by seven inches by 43 inches, and is very similar in appearance and size to the big nugget got previously in the adjoining claim. It has been cleaned and smelted, and has yielded 306 oz. of pure gold of the best sample. Before the excitement caused by the discovery of the last nugget had sub-sided, there was a shout from an adjoining claim. Sam Woodall, a Llanelly miner, felt his pick strike a hard yielding sub-stance, and, satisfied that he had struck a nugget, called the attention of his mates to the fact. He soon levered it out of the ground with his pick. Taking it up in his arms he staggered out of the claim with it, and in a minute or two was sur-rounded by hundreds of men who rushed from all over the field to view it, and to feel its weight. It was certainly a magnificent specimen, and the fortunate miners were congratulated on all sides. Its weight was guessed to be a hundredweight, and probably in its then dirty state it would nave turned the scales at that. In a few minutes the crowd was so dense that it was impossible to get a close inspection. The nugget was first taken to Newbridge under escort, then through Llanelly to Tarnagulla, where it was lodged in the Union Bank. It was found that the bank scales were not sufficiently large to weigh the mass. By tying a number of large weights together, and suspending them from a steel bar, a fairly accurate weight was obtained, and it just balanced 80 lb., or 960 oz. The nugget measures 16 in. x 10 in. x 5 in. The party was cheered as it drove up the main street here, and the sight of an armed escort was quite a novelty. The nugget was held aloft in a tin dish for inspection by the crowd. These nuggets were found in the shallow workings, and neither of them were a foot under the surface. The ground is a black loamy soil; there was no appearance of wash whatever, and no one knowing anything of alluvial mining would think of searching for gold in such a spot. All those who have claims on the hillside are breaking out all the dirt in a face from the surface to the reef, which is a mixture of lime and sunstone, and searching for nuggets. The ground is carefully pulverised so that nothing shall be missed. Some are puddling the whole of it, but it is hardly payable. Where the big nuggets are now being found, the ground has been pegged out and abandoned more than once since the rush started, and shares in the claims have been purchased for small amounts. Smith was given a third share in the claim where the first nugget was found for puddling the dirt big lump was discovered, by Woodall, Condron, Brooks and Eva, two of them sold a sixth share for £5 a few days ago to a man named Woods, who only worked a few days and sold out again for 50/. Some fancy prices are now being offered for shares in the claims in the vicinity. Woodall holds a third share, Condron and Brooks three-quarters of a share each, and Eva a sixth share. The largest nugget has been christened "The Poseidon." The names given to the other nuggets obtained previously are as follow: — Wragg Bros., 88 oz. nugget, "The Gem"; Smith and party's 378 oz. nugget, which was unearthed on election day, has been fittingly named "The Federal"; Jackson and Hughes 152 oz.specimen, "The Little. Beu"; Williamson and Stephenson's 373 oz. nugget is said to be called "The Christmas Box." A representative from the (Mines department has been at the bank during, the week taking models for the museums and schools of mines. )A replica of the "Gem" gold nugget that was discovered on 29.11.1906 on the Poseidon Lead at Tarnagulla at the depth of 9 feet. Found on the bedrock by the Wragge Bros. Weight 88 ozs. Value of $126,358 in 2016. (See additional Research.)mining, models, plaster model of victorian gold nugget -
Bendigo Historical Society Inc.
Memorabilia - GOLD NUGGET COLLECTION: THE POSEIDON
A replica of the gold nugget 'Poseidon' that was discovered on the 18th of December 1906 at Tarnagulla. It was found 10 inches below the surface, 2 inches above bedrock with much quartz. It was found by Woodall and Party and named after a famous racehorse of the time. Gross weight 953 ozs. Net 703 ozs. (See additional research).mining, models, plaster model of victorian gold nugget, https://www.australiangeographic.com.au/topics/history-culture/2016/11/australias-biggest-gold-nuggets/ -
Bendigo Historical Society Inc.
Slide - Dunn's Rock Eppalock, 2012
The low rolling hills of the Kimbolton countryside consist of ancient, hard and fractured Ordovician rock up to 65 million years old, which was originally deposited deep under the sea. Rocks mainly are sandstone, mudstone, black shale and quartz conglomerates. Marine fossils can be found in the area. Around seven million years ago a basalt flow buried the original bedrock along the along the Campaspe River. Ongoing weathering, wind and water movement over the following years has produced younger clay, sand, silt and gravel deposits throughout the area. Patches of White Hills Gravel are also found in the area. Another unique geological feature of this area is the Permian Glacial Pavement rocks north and south of Eppalock and glacial sediments (such as “Dunn’s Rock” and “Kellams Rock”). During the ice age (up to 280 million years ago) large glaciers moving over the countryside, scoured out sediments, pulverized bedrock, polished and cut grooves into bedrock in the direction of ice movement. When the ice melted boulders etc where left behind in areas of entirely different rock types, such as a 100 Tonne granite block known as ‘The Stranger’ near Derrinal. Dunn's Rock (Glaciated Pavement) Eppalock - Photos of the rock and a field group collecting date with Lake Eppalock (Knowsley) in the backgroundhistory, bendigo, dunn's rock eppalock, kimbolton forest, lake eppalock, gately collection -
Bendigo Historical Society Inc.
Document - CAROL HOLSWORTH COLLECTION: GEOLOGICAL REPORT BENDIGO
Four page document, not sequential. Front page: structural trends, major faults and folds in the Bendigo area are depicted in a diagram. Fault lines and folds include the Leichardt Fault, the Break O'Day Fault, Sebastian Fault, Whitelaw Fault, the Yankee Creek Fault and the Fosterville Fault. Aecond page shows the typical reef forms on the Bendigo goldfield (Willman 1988) in a diagram. The Sebastian goldfield is described, with its four lines of reef, the Eureka, Gaskill's, Frederick the Great and Gamboni. Third page describes the White Hills gravels. Fourth page is a table showing thel biostratigraphic zonation of the Ordovician bedrock based on key graptolite forms and assemblages.bendigo, mining, geological bulletin -
The Beechworth Burke Museum
Photograph, est. 1860-1875
In 1875, the Rocky Mountain Extended Gold Sluicing Company Ltd was created, utilising the previous Rocky Mountain claim for the area near Lake Sambell. The company employed A.L Martin to survey an area for a tunnel underneath Beechworth and Johnson Stephens to dig it. The tunnel was built at a rate of 40 feet a month and eventually measured 800 metres. The tunnel was a true accomplishment both in the present and during the 19th century. It was considered to be a marvelous engineering feat. Beechworth is renowned for its hydraulic sluice method of mining. This involved soil being exposed to torrents of water from high-pressure hoses. From 1876 until its closure in 1921, the mine produced an astounding 47,926 ozs of gold. Companies like this were the source of income for many Chinese gold-diggers who sought to make their fortune on the goldfields of Beechworth. During the height of the rush, the town had around 7,000 Chinese inhabitants living on the outskirts of town as they were not permitted to live within Beechworth itself.The search for gold is ingrained into the history of Victoria and therefore, images like this one which portrays 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 undertaken which provides insight into the impact of sluicing on the environment at a time when it was done. This image of the Rocky Mountain mine is historically significant as the mining complex is now non-existent, with the only remains being the tunnel built in 1880 by the company, which was considered one of the greatest engineering feats of the time. The image also provides a first-hand look into the social and cultural networks at play during the 19th century with racial segregation of the Chinese at the 'Chinese Camp', as well as an insight into Beechworth's origins during the Gold Rush.A sepia rectangular photograph printed on matte photographic paper as a postcardReverse: Historic Beechworth / 7792.1 / ROCKY MOUNTAIN MINE / Viewed from the “Chinese Camp”, shown partly in the foreground, we see the central plant of the famous Rocky Mountain Mining Company. This extensive complex, of which nothing remains, was situated between Silver Creek and the present Lake Sambell area. The company was responsible for a tunnel cut through solid bedrock underneath the town of Beechworth and surfacing near the keystone bridge on the Wangaratta side. Completed in 1880 it was declared to be one of the greatest engineering feats in Australia. The tunnel is still basically intact today. / Series by Wooragee Graphics: Historic Beechworth. / COPYRIGHT BURKE MUSEUM / No.72 beechworth, rocky mountain mine, sluicing, gold rush, mining, gold -
Federation University Historical Collection
Letter, Letters from Richard Squire to his son Tom 1935
In 1905 Richard Squire was manager of the West Berry Consols at Allendale, and developed an improved system of mine ventilation, which was supported in "The Age." He was successful in combating and remedying the gas and ventilation troubles of the Deep Mines of Creswick and Allendale Districts after all had failed. MINE MANAGERS’ ASSOCIATION. Ballarat Branch. ... Mr R. B. Squire, manager of the West Berry Consols, at Allendale, submitted a paper detailing what he had done tor the betterment of ventilation in the alluvial mines of Smeaton and Mary borough districts- Members gave Mr Squire every credit for the results that he claimed to have effected; the adoption of his ideas had testified to their value to mine-owners. It was painted out, however, that for want of a thorough debate of the subject with experienced men the author had unwittingly included some general statements that required modifying in some points and extending in others, in justice to other workers among the earlier and the present day managers of mines. It was decided to invite the author to meet a sub-committee on this subject!Various handwritten Letters from Richard Squire to his son Tom 1935richard squire, tom squire, hazel squire, jack squire, jim squire, ned, mt mercer, basil, plant, skids, pump, c. hayes, illness, poppet, carburetor, shaft, balance weight, pearson, pulleys, syndicate, goon, suction, lease, reports, estimates, flat fields, reef, banagwanth, trucks, pipeclay, sandstone, suction pipe, valves, honeycomb rock, mr kermode, yarrowee, ballarat, reef combs, cheques, earthquake, yellow slate, leigh river, dyke, the madame bay coy, allendale, berry west, quartz, ballarat deep leads, ballarat deep leads extension, bore, reads, bedrock, j. hayes, harmen premier distributors, middletons, cemented sand, electricity commission, g m of a, gold mines of australia, dick harry, pearsons, hawksburn, crown wheel, rice's paddock, liz the car, volcanic ridge, lrg coy, mcnaughton's paddock, madison's lead, cameron & sutherland, crabhole, rokewood, glenfine, mrs gibbs, dobson, booth, shiels, thomas mitchell, mcpherson's reward, haddon, trunk lead mine, elaine, pitfield plains, mr clarke, daylesford, kuchel, shelford, geoff squire, lode, quartz reef, bladder attack, kidneys, income tax, reginald murray, grenville, blasting, john b. dennison, martin t. taylor, durham and buninyong deep lead, sebastopol plateau, mr wilkie, the premier petrol distributing agency of ballarat, lawaluk, ryan's western leads, mr nichol, mr hodge, knox schlapp and co., dr griffiths, state accident insurance office, magdala mine stawell, mining -
Federation University Historical Collection
Letter, Letters from Richard Squire to his son Tom 1936
In 1905 Richard Squire was manager of the West Berry Consuls at Allendale, and developed an improved system of mine ventilation, which was supported in "The Age." He was successful in combating and remedying the gas and ventilation troubles of the Deep Mines of Creswick and Allendale Districts after all had failed. MINE MANAGERS’ ASSOCIATION. Ballarat Branch. ... Mr. R. B. Squire, manager of the West Berry Consuls, at Allendale, submitted a paper detailing what he had done tor the betterment of ventilation in the alluvial mines of Smeaton and Mary borough districts- Members gave Mr. Squire every credit for the results that he claimed to have affected; the adoption of his ideas had testified to their value to mine-owners. It was painted out, however, that for want of a thorough debate of the subject with experienced men the author had unwittingly included some general statements that required modifying in some points and extending in others, in justice to other workers among the earlier and the present-day managers of mines. It was decided to invite the author to meet a sub-committee on this subject!Various letters written by Richard Squire to his son Tom on the topic of their Mine in 1936 richard squire, tom squire, hazel squire, jack squire, jim squire, ned, mt mercer, basil, plant, skids, pump, c. hayes, illness, poppet, carburetor, shaft, balance weight, pearson, pulleys, syndicate, goon, suction, lease, reports, estimates, flat fields, reef, trucks, pipeclay, sandstone, suction pipe, valves, honeycomb rock, mr kermode, yarrowee, ballarat, reef combs, cheques, yellow slate, leigh river, dyke, quartz, ballarat deep leads, ballarat deep leads extension, bore, reads, bedrock, cemented sand, g m of a, gold mines of australia, liz the car, geoff squire, lode, cameron and sutherland, lancaster, harman, hayes timber, t. hood, alan squire, catarrh, kidney disease, stomach issues, ethel, measles, scarlet fever, ross creek field, j. bourke, j. cock, ross creek gold mining co., frank herman, hogan & banagwanath, hogan, banagwanath, napolean deap lead, hanlons, lillas, martin, jack hayes, diptheria, anticline, mr mcnichol, ronaldson, bob allan, jenkins, hunter, wilkinson, eyres brothers, g.gay & co, buninyong, llewellen, glenfine, the star mine of avoca fields, talbot alluvials, g.e. dickenson, guildford plateau, a.b.c. special supply store, jelbart, geological branch, shell coy, mr horsefields, lawaluk, almanac, trenery, barry, mining -
Federation University Historical Collection
Letter, Letters written by Richard Squire to his son Tom Squire 1938
In 1905 Richard Squire was manager of the West Berry Consols at Allendale, and developed an improved system of mine ventilation, which was supported in "The Age."[4] He was successful in combating and remedying the gas and ventilation troubles of the Deep Mines of Creswick and Allendale Districts after all had failed. MINE MANAGERS’ ASSOCIATION. Ballarat Branch. ... Mr R. B. Squire, manager of the West Berry Consols, at Allendale, submitted a paper detailing what he had done tor the betterment of ventilation in the alluvial mines of Smeaton and Mary borough districts- Members gave Mr Squire every credit for the results that he claimed to have effected; the adoption of his ideas had testified to their value to mine-owners. It was painted out, however, that for want of a thorough debate of the subject with experienced men the author had unwittingly included some general statements that required modifying in some points and extending in others, in justice to other workers among the earlier and the present day managers of mines. It was decided to invite the author to meet a sub-committee on this subjectHandwritten letters written by Richard Squire to his son Tom Squire 1938 on lined paperrichard squire, tom squire, hazel squire, jack squire, jim squire, ned, mt mercer, plant, skids, pump, poppet, carburetor, shaft, balance weight, pulleys, syndicate, suction, lease, reports, estimates, flat fields, reef, trucks, pipeclay, sandstone, suction pipe, valves, honeycomb rock, yarrowee, ballarat, reef combs, cheques, yellow slate, leigh river, dyke, quartz, ballarat deep leads, ballarat deep leads extension, bore, reads, bedrock, cemented sand, g m of a, gold mines of australia, liz the car, geoff squire, lode, hayes timber, ethel, ross creek field, ross creek gold mining co., frank herman, lillas, jack hayes, eyres brothers, g.gay & co, buninyong, glenfine, the star mine of avoca fields, talbot alluvials, guildford plateau, a.b.c. special supply store, geological branch, shell coy, lawaluk, almanac, mcbinny, bingley's paddock, cargaire valley and lead, stand and deliver demands, sheehan's, smeaton hotel, john charleson, ballarat main lead, goon, dereel, the bay leads, avoca field, ballarat alluvials, haddon field, courier, school of mines, bewick mining & co., broken hill syndicate, morrison's lead, baragwanath, creswick, duke of wellington plant, the moorabool lead, kohinoor band and alluvian, star of the east, bonshaw, epidemic, polio, k.w. steedman, mr newman, allendale mines, professor mica smith, alfred mica smith, mr hodge, w. taylor, mcpherson's reward coy, mr mitchell, billy thomas, john bull, albert, nina, stanley hunter, frederick the great, ross creek south, bislolo, brilolo, birlolo, ballarat east coy, maxwells, reginald murray, bob allan, vendetta, john lynch, dodson, mnster of mines, e.j. hogan, jonah ward, mcnaughton's paddock, bellesby, alec peacock, jenkins, h.c. jenkins, conspiracy, argus, mr ellerby, dr lawrence, occulist, mining -
Federation University Historical Collection
Letter, Letters written by Richard Squire to his son Tom Squire 1937
In 1905 Richard Squire was manager of the West Berry Consols at Allendale, and developed an improved system of mine ventilation, which was supported in "The Age."[4] He was successful in combating and remedying the gas and ventilation troubles of the Deep Mines of Creswick and Allendale Districts after all had failed. MINE MANAGERS’ ASSOCIATION. Ballarat Branch. ... Mr R. B. Squire, manager of the West Berry Consols, at Allendale, submitted a paper detailing what he had done tor the betterment of ventilation in the alluvial mines of Smeaton and Mary borough districts- Members gave Mr Squire every credit for the results that he claimed to have effected; the adoption of his ideas had testified to their value to mine-owners. It was painted out, however, that for want of a thorough debate of the subject with experienced men the author had unwittingly included some general statements that required modifying in some points and extending in others, in justice to other workers among the earlier and the present day managers of mines. It was decided to invite the author to meet a sub-committee on this subject!A variety of Letters written by Richard Squire to his son Tom Squire about the goings on at Mt Mercer Mine 1937richard squire, tom squire, hazel squire, jack squire, jim squire, ned, mt mercer, plant, skids, pump, poppet, carburetor, shaft, balance weight, pulleys, syndicate, suction, lease, reports, estimates, flat fields, reef, trucks, pipeclay, sandstone, suction pipe, valves, honeycomb rock, yarrowee, ballarat, reef combs, cheques, yellow slate, leigh river, dyke, quartz, ballarat deep leads, ballarat deep leads extension, bore, reads, bedrock, cemented sand, g m of a, gold mines of australia, liz the car, geoff squire, lode, cameron and sutherland, hayes timber, alan squire, ethel, ross creek field, ross creek gold mining co., frank herman, lillas, jack hayes, eyres brothers, g.gay & co, buninyong, glenfine, the star mine of avoca fields, talbot alluvials, guildford plateau, a.b.c. special supply store, geological branch, shell coy, lawaluk, almanac, mcbinny, bingley's paddock, cargaire valley and lead, stand and deliver demands, sheehan's, smeaton hotel, john charleson, aleck charleson, ted brown, billy jordan, mr banks, ballarat main lead, binney, goon, illabrook, mrs trenery, bre, max, june, mary, len, barry, hunter, herman, martin, aunt annie, bella, pitfield coy, mcnaughtons, donaldson, dereel, hogan, the bay leads, avoca field, ballarat alluvials, neil cameron, haddon field, courier, tom cotton, llewellen, stanley hunter, mr leonard, tom mitchell, school of mines, bryant, a.c. connely, dodson, constable mcmullins, adam ronaldson, bewick mining & co., reginald murray, r.c. selwyn, craig's hotel, broken hill syndicate, morrison's lead, wilkinson, j. hayes, mr nichol, burglary, baragwanath, wilkinson ross, creswick, seville, mr. ross, o'connor, c. mcgrath, alfred mica smith, henderson ross, angus kelly, a. r. dodson, duke of wellington plant, the moorabool lead, williams, paralysis, woodlock, squire, whipp, joe williams, peacock, moran, buchanan, hoare, bree kutchel, kohinoor band and alluvian, star of the east, bonshaw, epidemic, polio, mining -
The Beechworth Burke Museum
Photograph - Photograph - Reproduction, ca. 1900
This image shows the approach to Beechworth from the south-west via the Newtown Bridge. Numerous early buildings line the road as it bifurcates to become Ford and High Streets on the ridge above Spring Creek and Newtown Falls. The sloping, rocky terrain and water course along the gorge show evidence of the intense mining activity that occurred at the site. The Ovens Gold Rush at Beechworth started when gold was found at Spring Creek in February 1852, prompting an influx of miners from around the world. The population grew over 20,000 by 1857. While the earliest mining at Beechworth was similar to that in other Victorian goldfields like Ballarat and Bendigo, Beechworth is notable for its use of hydraulic sluicing as a major method of removing wash-dirt. Hydraulic sluicing employs high pressure jets of water to blast away large areas of earth and wash it down to be run through a sluice box. Gold gets caught in the sluice and the remaining slurry is washed away. This method of mining is extremely effective but causes significant environmental impacts and damage to waterways. Large water quantities were required for large-scale sluicing, and the long water races and deep tailraces that were constructed in the Beechworth area in the nineteenth century are nonetheless considered feats of engineering. The site in the photograph is associated with the Rocky Mountain Mining Company who constructed an eight hundred meter tunnel under the township between 1876-1880 to reduce water levels at Spring Creek, which had been subject to diversions since the earliest days of alluvial mining. Over four million ounces of gold (115 tones) were found at Beechworth between 1852 and 1868, and the wealth from the gold rushes built Beechworth and the nationally significant buildings that remain standing today.This image shows the early development of the Beechworth township above Spring Creek, where gold was discovered in 1852. Evidence of hydraulic sluicing, a uniquely predominant method at Beechworth, and water-works engineering are present in the landscape. By the 1870s, alluvial gold deposits were depleted and increasingly complex engineering was required so deeper shafts could reach bedrock. This image is significant for understanding changes to the landscape and the evolution of mining methods and engineering practices related to the extensive construction, manipulation and management of water networks. The shift from smaller scale alluvial mining to larger company dominance in the mining industry has implications for understanding wider social, economic, political and industrial changes in the region of Beechworth and within the context of the Victorian Gold Rush more broadly. A black and white rectangular reproduction photograph printed on photographic paper. burke museum, beechworth museum, beechworth, gold fields, gold rush, victorian gold rush, hydraulic sluicing, rocky mountain mining company, spring creek, netwown falls, mining tunnels, water races, tailraces, colonial australia, australian gold rushes, mining technology, beechworth historic district, indigo gold trail, migration, indigo shire, gold mining, gold mining history