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Revisiting factors influencing premature closure of small-scale miners: A case study of quarry mines Mahlaule, Ntiyiso Ally; Rapholo, Maropene Tebello Dinah; Sengani, Fhatuwani
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6917

Abstract

This study accentuates the significant contribution of small-scale mining (SM) to stimulating economic development, providing employment, and developing infrastructure. Nevertheless, the continuing premature shutdown of SM bodes ill for economic recovery. To get an idea of these underlying reasons, a systematic review of all articles published in the scientific literature was calculated using Web of Science, Scopus, and Google Scholar. The application of Boolean operators guided the collection of key insights utilising the PRISMA protocol. Tools like ggplot2 (for graphs) and word clouds in RStudio helped us recognise patterns. Analysis was facilitated with ggplot2, showing boxplots and bar charts of quantitative variables between quarry types and geographical regions. At the same time, word clouds also gave us insights into the most common expressions and, thus, the main reasons behind quarry closures. Further, the research revealed a lack of subsurface geological data, which is needed to estimate mineral resources in SM accurately. It also identified a relation with under-exploration leading to early abandonment which in turn increases the chance of misclassification of mineral reserves. Consequently, the study advocates for further research to devise practical strategies for managing mineral resources effectively in small-scale mining operations.
Sustainable small-scale mining through geological and resource estimation: a holistic, society-centred approach Mahlaule, Ntiyiso Ally; Sengani, Fhatuwani; Rapholo, Maropene Tebello Dina
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9505

Abstract

Sustainable small-scale mining (SSM) development presents both challenges and opportunities for stone resource economies. Having been characterised by informality, a lack of technology, and environmental degradation, SSM remains a significant global producer of geological raw materials, including stone resources. However, it often struggles with the appraisal of resources and the classification of reserves. Conventional geological methods, although effective, are not being considered. This study examined the traditional estimation of the contribution of stone techniques to sustainability and resource estimation in small-scale industries. Babanana Greyfield at Meadowbank Farm was selected as a case study area due to its accessibility and the availability of borehole information. Rotary drilling, core logging, and Avanza Solution methods were employed to collect the data necessary for constructing geological maps and cross-sections. Maptek Vulcan Quarry Modeller was also employed for 3-D modelling and estimation of stone resources. Results revealed that these techniques efficiently improved volume calculation, tonnage, resource, and reserve estimation. These traditional techniques have been proven to enhance accuracy, minimise environmental impact, and facilitate strategic planning when applied effectively. Nevertheless, financial and technical constraints persist. The validation of the methods used in the study revealed a 99.99% performance score. Thus, this study is considered highly reliable, as evidenced by the near-total concordance between the predicted and actual volumes, which implies great internal consistency in this study and hence reproducibility. The research suggests that training initiatives should focus on specific requirements, low-technology expenditure, and organisation by agencies such as ASPASA, the Department of Mineral Resources and Energy, and the Council for Geoscience to implement sustainable methods.