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Australian mining began blast body boom Bowes Kelly British Broken Hill cent copper company's Comstock copper cost diggers dividends Dixon drill Dundas Emu Bay engineer feet field fire furnaces gold Gormanston gossan Grotty Grotty's hauled Heemskirk Hercules Hobart hundred investors Iron Blow Karlson Kelly Basin King River Knox later Launceston Linda Valley lode London Lyell directors Lyell Mining Lyell railway Lyell shares Macquarie Harbour manager McDonough Melbourne metallurgist miles mill miners Mining Company months Mount Lyell mountain Murray North Lyell North Lyell Company open cut ounces pany pegged Pieman Pieman River port price of copper profit prospecting prospectors pyritic smelting Queen River Queenstown rail rich rock Rosebery Schlapp shaft shareholders ship silver smelters smoke South Sticht stope Strahan sulphur Tasmanian Tharsis thousand timber tons town Trent tunnel underground union Victorian Waratah west coast West Lyell western Zeehan zinc