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since the beginning of civilization, people have used stone, ceramics and, later, metals found close to the earth's surface. these were used to make early tools and weapons; for example, high quality flint found in northern france, southern england and poland was used to create flint toolancient egypt
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mining in europe has a very long history. examples include the silver mines of laurium, which helped support the greek city state of athens. although they had over 20,000 slaves working them, their technology was essentially identical to their bronze age predecessors. at other mine en.wikipediaa beginner's guide to cryptocoin mining what you 7/5/20210183;32;smart miners keep electricity costs to under 0.11 per kilowatthour; mining with 4 gpu video cards can net you around 8.00 to 10.00 per day (depending upon the cryptocurrency you choose), or around 250300 per month. the upfront investment in purchasing 4 asic processors or 4 amd radeon graphic processing units.
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