Just-in-time development model for a sub-level caving underground mine in Zimbabwe.

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dc.citation.epage191en_ZA
dc.citation.issue3en_ZA
dc.citation.spage187en_ZA
dc.contributor.authorMusingwini, C.
dc.contributor.authorMinnitt, R.C.A.
dc.contributor.authorPhuti, D.
dc.contributor.authorMakwara, F.
dc.date.accessioned2018-08-24T13:59:08Z
dc.date.available2018-08-24T13:59:08Z
dc.date.issued2003-04
dc.descriptionReview article.en_ZA
dc.description.abstractTraditionally, mineral reserves management at most underground mines in Zimbabwe focus on maintaining large mineral reserves so that the time between development and production is as long as possible. Historical data at Shabanie mine, a Zimbabwean sub-level caving underground mining operation, confirms this practice. However, the high cost of underground development means that the luxury of large buffer mineral reserves cannot be justified. Furthermore significant increases in the costs of production, exacerbated by the current unfavourable economic climate, make the wisdom of extending development workings well ahead of use questionable. Poor ground conditions at Shabanie mine, mean that some development ends have to be re-mined two or three times due to partial or complete closure between the time they are mined and the time they are utilized. In order to reduce the inordinately high support costs associated with closure of development ends a new 'Just-in-time' (JIT) approach that provides development ends as and when they are needed, has been adopted. Accordingly a model to determine an appropriate 'just-in-time' rate of development has been created. The JIT development model indicated that the mine could reduce development rates from 330 m/month in 2001, to 160 m/month in 2002 and achieve savings of about 50% on annual support costs, but still assure customers of a long-term product supply. The mine accepted the model in November 2001 and began implementing it in 2002. Results of the implementation will be reviewed in 2003.en_ZA
dc.description.librarianMvdH2018en_ZA
dc.identifier.citationMusingwini, C. et.al. 2003. Just-in-time development model for a sub-level caving underground mine in Zimbabwe. Journal of the Southern African Institute of Mining and Metallurgy 103(3), pp. 187-191.en_ZA
dc.identifier.issn2225-6253
dc.identifier.urihttps://hdl.handle.net/10539/25491
dc.journal.titleJournal of the Southern African Institute of Mining and Metallurgy.en_ZA
dc.journal.volume103en_ZA
dc.language.isoenen_ZA
dc.orcid.id0000-0002-5150-4749en_ZA
dc.publisherThe Southern African Institute of Mining and Metallurgy.en_ZA
dc.rights© 2003. The Southern African Institute of Mining and Metallurgy. This Journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.en_ZA
dc.subjectMineral resourcesen_ZA
dc.subjectShabanie Mineen_ZA
dc.subjectJust in time productionen_ZA
dc.subjectCostsen_ZA
dc.subjectCorrelation methodsen_ZA
dc.subjectUnderground minesen_ZA
dc.titleJust-in-time development model for a sub-level caving underground mine in Zimbabwe.en_ZA
dc.typeArticleen_ZA
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