Where is all the gold?
نویسندگان
چکیده
The Witwatersrand Basin contains by far the most gold ever found, and has hosted mining from its discovery in 1886 to present. For many years, South Africa was world's largest producer of gold, nearly all which came Witwatersrand. Since 2000, fallen back several positions because declining output. There are complex varied reasons for this; however, resources not one them. As as author knows, there no qualified estimates literature remaining Basin. This paper collects data sources then, using elementary accounting error analysis, attempts estimate amount It includes underground existing defunct mines, evaluated ore resources, dumps. Compiled 1887 2019 shows that 50 200 t were produced while it is estimated a further 48 100 remain underground, both within outside mine leases, 1 600 on surface tailings, an unknown rock Nearly this will inaccessible with current methods, major technical developments be necessary before any can categorized code-compliant resource or reserve. To win prize, industry have rethink approach mining, old leases unexploited ground. also find effective means preventing theft informal rise.
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ژورنال
عنوان ژورنال: Journal of The South African Institute of Mining and Metallurgy
سال: 2023
ISSN: ['2411-9717', '0038-223X']
DOI: https://doi.org/10.17159/2411-9717/1902/2023