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Dentro del libro
Resultados 1-5 de 37
Página 4
... width taken 2 feet , value 14 dwts . of gold per ton . Every- thing was ready for rapid development at this level when the flood occurred at Blythe's Creek on the 25th June , but nothing further could be done until about the middle of ...
... width taken 2 feet , value 14 dwts . of gold per ton . Every- thing was ready for rapid development at this level when the flood occurred at Blythe's Creek on the 25th June , but nothing further could be done until about the middle of ...
Página 9
... width which it had in the profitable zone above the 300 - feet level . The main shaft at the Austral Valley Mine is being sunk , and it is intended to sink it to 300 feet , and then open out . The Oonah Mine has been placed under option ...
... width which it had in the profitable zone above the 300 - feet level . The main shaft at the Austral Valley Mine is being sunk , and it is intended to sink it to 300 feet , and then open out . The Oonah Mine has been placed under option ...
Página 11
... width of 36 feet . This drive so far has shown the existence between it and the level above of 10,000 tons of ore . Assays of the galena range from 132 ozs . to 161 ozs . per ton . A high - level water scheme for driving all the mining ...
... width of 36 feet . This drive so far has shown the existence between it and the level above of 10,000 tons of ore . Assays of the galena range from 132 ozs . to 161 ozs . per ton . A high - level water scheme for driving all the mining ...
Página 51
... width . The sedimentary rocks have been penetrated first by basic eruptions and then by intru- sions and dykes of granitic origin , the tin ore being casually connected with the latter . The detrital ore is tin oxide , and the lodes are ...
... width . The sedimentary rocks have been penetrated first by basic eruptions and then by intru- sions and dykes of granitic origin , the tin ore being casually connected with the latter . The detrital ore is tin oxide , and the lodes are ...
Página 52
... width of the belt which has been worked is about 200 yards , so that the features are more those of a lake than of a gutter . At the same time certain runs are better for gold than others . The granite floor is perhaps a couple of miles ...
... width of the belt which has been worked is about 200 yards , so that the features are more those of a lake than of a gutter . At the same time certain runs are better for gold than others . The granite floor is perhaps a couple of miles ...
Términos y frases comunes
12 feet 20 feet 31st December accident acres adit alluvial arsenopyrite Beaconsfield boundary bruises cage carrying channel City of Hobart Coal Company copper Cox's Bight Creek crosscut east crushed depth district Ditto Ditto drive dwts east reef explosives feet feet further feet west feet wide flat fractures further west Gate reefs gelignite gold-bearing Golden Gate gossan granite ground Grubb's shaft Gully hill Hobart inches injured intersected Loane's reef lode Lyell main reef main shaft Mangana Married Mathinna Miner's Dream mineral Mount Cameron Name of Sufferer north and south north-west occur outcrop passed payable prospecting pyrites pyrrhotite quantity quartz quartz veins quartzite reef formation reef-channel Renison Bell rock sandstone schist Section shoot slate sluice South Gate stone stope strata sunk surface Tasmania Gold Tasmanian Consols tion tons truck tunnel underground underlay ventilation west reef western reef width winze Zeehan zone