sluice box sentence in Hindi
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- The early miners had noted that mining for placer gold was hampered by heavy black sand in the sluice boxes, and in 1874 it was discovered that the heavy sand that impeded gold recovery was the lead mineral cerussite, which has a high silver content.
- Once a small occurrence or " show " was found, it was then necessary to intensively work the area with pick and shovel, and often via the addition of some simple machinery such as a sluice box, races and winnows, to work the loose soil and rock looking for the appropriate materials ( in this case, gold ).
- The pond is excavated in the gravel bar and filled from the natural water table . " Pay " gravel is excavated from the front face of the pond and processed through the floating plant, with the gold trapped in the onboard sluice box and tailings stacked behind the plant, steadily filling in the back of the pond as the operation moves forward.
- A realistic mining operation required $ 1, 500 ( $ 1.2 million ) for wood to be burned to melt the ground, along with around $ 1, 000 ( $ 800, 000 ) to construct a dam, $ 1, 500 ( $ 1.2 million ) for ditches and up to $ 600 ( $ 480, 000 ) for sluice boxes, a total of $ 4, 600.
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