The economy of the state, which had been primarily supported by metal mining, shifted towards agriculture, forest products and tourism.
In the latter part of the century, economic activity quickened with the development of large-scale, precious metal mining.
It is likely that Cornish women worked in metal mining since antiquity, but the first records of female mine workers date from the 13th century.
Archaeological evidence suggests that even earlier metal mining existed, around 2000 BC.
Non-ferrous metal mining has been an industry of major importance in several areas.
But the law on metal mining, which was passed by Congress 133 years ago, remains silent on the question, and that has created a regulatory vacuum.
Subsequently china clay extraction became more important and metal mining had virtually ended by the 1990s.
The economy of Salzkotten today focusses upon metal mining and refinery, machine manufacture, electronics, food production and services.
There is little metal mining occurring today, but there is continued interest in precious metals in these mountains.
Cultural jewels of Wales (under metal mining and manufacturing)