Practical MiningD. Van Nostrand Company, 1890 - 106 páginas |
Otras ediciones - Ver todas
Términos y frases comunes
80 per cent amination amount Argo assay Black Hills brittle silver Bullion Butte City capitalist cent lead certificates chlorination mill client cloth commercial competent concentration condemn consider cost crush district dump employed engineer examination expense extracted failure Father de Smet favor feet friends gold and silver gray copper gross value hacienda hand-sorting Hydraulic Mining investment knowledge labor Leadville lixiviation loss machine machine men machinery managers matter ment mentioned metallurgical operations method milling gold Minerals mining and metallurgy mining enterprise Mining Exchange mining industry mining shark Montana owner Pachuca pan amalgamation patio process practice precious metals profit prudence pump purchase purpose reached render salt samples saved Silver Cliff slimes smelter smelting charges smelting-works sold specific gravity success sufficient Suppose tailings tell tellurides timber tion tons transportation vein wish worthless York