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Two years later, when its annual output of copper reached 9,500 tons, it was the
largest copper mine in the British Empire. Total profit passed a million only five
years after the first copper had been smelted, yet profit was the sole criterion by ...
Broken Hill was enriched by Colorado smelting methods, by the new Huntingdon
-Heberlein process for roasting lead ores, by the similar roasting process devised
by the Australians Carmichael and Bradford, by the American gravity mills and ...
They owned no smelting works, so they had to sell their lead concentrate to
German or Australian smelters at low prices. Why not buy a smelter to produce
bullion from the concentrate of the friendly mines? Large smelting works at Dapto
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LibraryThing ReviewUser Review - nandadevi - LibraryThing
The history of mining is central to Australian history, from the gold rushes of the 1860's which brought hundreds of thousand of immigrants, to the mountain ranges of iron ore and immense natural gas ... Read full review