Tin mining to trace metal content in the copper ore It was soon discovered that the addition of tin or arsenic to copper increased its hardness and made casting much easier, which revolutionized metal working techniques and brought humanity from the Copper Age or Chalcolithic to the Bronze Age around 3000 BC. Early tin exploitation appears to have been centered on placer deposits of cassiterite. The first evidence of tin use for making bronze appears in the Near East and the Balkans around 3000 BC. It is still unclear where the earliest tin was mined, as tin deposits are very rare and
Sundown Tin and Copper Mine Sundown Tin and Copper Mining Company (N.L.) which erected a 10-head battery driven by a suction-gas plant, and built two fines dams. No work had been done for some time on the tin portion, but some had been going on for copper. In 1915 a calciner was erected, together with "another" Wilfley concentrating table and a Berdan crushing pan, and a new shaft was sunk on the tin deposit. The new tin shaft had poppet legs erected over it in 1916, and a 16 hp Tangye winding engine and vertical boiler were installed. That year 69.5 tons of tin and