https://padlet.com/gomezj02/f3j8zzp1524r Made by James & Darco en-us 2016-10-26 00:42:51 UTC 2023-10-14 13:39:02 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lightdecrease.png gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197894 to search for mineral deposits, especially by drilling and excavation.]]> 2016-10-26 00:42:51 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197894 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197896 2016-10-26 00:42:51 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197896 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197897  Minerals in the crust dissolve in rain and running water and are washed into creeks and rivers

]]> 2016-10-26 00:42:51 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197897 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197898 Geologists make use of satellites equipped with cameras, radar and other sensors to search for geological features that are likely to contain high concentrations of minerals.]]> 2016-10-26 00:42:51 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133197898 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133198495 Miners dug deep holes, or shafts which would be approximately one meter squared and could be up to 50 meters deep. The miners would put timber along the sides of the shaft to stop it from collapsing and would use a windlass or winch to bring up buckets full of soil.]]> 2016-10-26 00:48:40 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133198495 shrimptond01 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133198680 Auger mining is method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest-cost techniques of mining, it is limited to horizontal or slightly pitched seams that have been exposed by geologic erosion.]]> 2016-10-26 00:50:22 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133198680 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199001 2016-10-26 00:53:14 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199001 shrimptond01 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199340 Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds.]]> 2016-10-26 00:56:18 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199340 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199343 2016-10-26 00:56:19 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199343 gomezj02 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199607 2016-10-26 00:58:58 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199607 shrimptond01 https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199766 2016-10-26 01:00:26 UTC https://padlet.com/gomezj02/f3j8zzp1524r/wish/133199766