quartz reef वाक्य
उदाहरण वाक्य
मोबाइल
- The remaining miners engaged in the more difficult Quartz reef mining.
- Gold prospecting for quartz reefs has never found payable reefs.
- The quartz reefs were mined from the early 1860s until the 1880s.
- The initial returns from the quartz reefs were significant.
- When the alluvial gold ran out, mining turned to quartz reef mining.
- At Beaconsfield, gold is mined from a quartz reef in a fault.
- They soon found and secured another seven more gold-bearing quartz reefs.
- Following the discovery of quartz reefs there were problems with attracting crushing machinery.
- By the 1860s the alluvial gold was exhausted and a shift to quartz reef mining began.
- Initially this was working alluvial deposits of gold but later focused on the mining of quartz reefs.
- At the same time, shafts were being sunk around Big Hill, becoming known as the Quartz Reefs.
- Some quartz reefs were also worked in the area, however the yields from these activities were not significant.
- In 1870 Stawell post office was renamed Stawell West, and Quartz Reef, Stawell post office was renamed to Stawell.
- Cornish quarryman Joseph Blight had arrived in the colony in 1855 and achieved some success in quartz reef mining at Eureka Reef.
- By the 1860s the alluvial gold had been exhausted and efforts turned to underground shafts in search of gold bearing quartz reefs.
- As these surface deposits were exhausted the quartz reefs at deep levels were exploited and several mines worked at depths exceeding 600 metres.
- The quartz reef containing coarse gold returned about 10oz per ton and was described as the best find in the district for years.
- The town's history began with the discovery of a quartz reef outcrop or'blow'by prospector William McGregor in 1863.
- At the time their efforts focused almost entirely on quartz reefs, little realising that gold on the Witwatersrand was confined primarily to conglomerate beds.
- A " quartz reef " is another term for a vein of quartz, and has nothing to do with biological reefs ( bioherms ), such as coral reefs.
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