The solubility of gold in a water and cyanide solution was discovered in 1783 by Carl Wilhelm Scheele, but it was not until the late 19th century, that an industrial process was developed. The expansion of gold mining in the Rand of South Africa began to slow down in the 1880s, as the new deposits being found tended to be pyritic ore. The goldread more
Drop Your Message
If you have any problems or questions about our products or need our support and assistance, please contact us and you will be replied within 24 hours. We promise we will never reveal your information to the third party. Thank you!