Transactions of the Royal Geological Society of Cornwall, Volume 14

100 fathoms 50-inch pumping 60 fathoms ancient arsenic Austell black tin blende Botallack Breage Camborne capel Caradon carbonate Carn Brea cassiterite chalcocite chalcopyrite Chalybite considerable Consols contain Cornwall course Crinnis cross-courses crystals deep and employed deposits depth Devon district Dolcoath East Pool EAST WHEAL elvan fathoms below adit fathoms deep faults fissures flucan formed Geol gozzan granite Gwennap heaves hematite Henwood Hill Illogan iron pyrites killas lode main lode mass metallic metalliferous miles mineral nearly NORTH WHEAL oxide Perran Plate Poldice Polgooth produced pumping engine quantities quartz Redruth reopened rich rocks schorl shaft siliceous silver slate sold stockworks supra surface tin and copper tin lodes tons copper tons of black tons of copper tons of iron tons of lead tourmaline Trans underlie United Mines veins West of England WEST WHEAL Wheal Busy Wheal Kitty WHEAL.-See winding engines wolfram yielded