In the 36 per cent, you put down for white labour, does that include office ^a#39;^j, ^a#39; niine expenses, managera#39;s salary, and ... The 460 per cent, is an outside case a it was the rate- freight on Portland cement. ... One would expect a far heavier expenditure on a deep level property than on an Economy of deep outcrop mine.
Title | : | The Mining Industry |
Author | : | Transvaal and Orange Free State Chamber of Mines |
Publisher | : | - 1897 |
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