S. Dominy, Janice C. Graham, Kim H. Esbensen, Saranchimeg Purevgerel
Sample collection, preparation and assaying are a vital activity at all stages of a mining project. Field sample collection is followed by sample reduction in both mass and fragment size to provide a sub-sample for assay. This process can be particularly challenging in the precious metal environment and may require specifi cally designed protocols. One of the biggest challenges is ensuring that all sampling and sub-sampling errors are controlled across the entire rig to assay pathway. In most cases, the primary sampling error (the error at the rig and/or core shed) may swamp the entire process. Challenges also exist throughout all sampling stages when coarse gold is present. In particular, the pulp is likely to contain some liberated, poorly comminuted gold particles, requiring the pulp to be assayed in total to avoid unnecessary additional errors during splitting and handling. PhotonAssay™ is a non-destructive and rapid gold assay technique capable of analysing coarse crushed (<3 mm) 350-500 g samples at a rate of ~70 samples per hour. It displays fast assay turnaround-time, requires lower sta� ng levels to operate, and removes the need for chemicals such as lead or cyanide. These characteristics make it applicable to gold ores, particularly those bearing coarse gold, as only crushing is required (minimal liberated gold) and multiple lots can be assayed. However, this advantage will be reduced if any of the sampling stages are not optimised. The optimisation of a sampling protocol comes from understanding the mineralisation and desired programme outputs. It is not simply a mathematical, or a statistical process, but a complex process taking advantage of orebody knowledge (including gold deportment studies) and application of the Theory of Sampling.
{"title":"Application of PhotonAssay™ to Coarse-Gold Mineralisation – The Importance of Rig to Assay Optimisation","authors":"S. Dominy, Janice C. Graham, Kim H. Esbensen, Saranchimeg Purevgerel","doi":"10.62178/sst.001.002","DOIUrl":"https://doi.org/10.62178/sst.001.002","url":null,"abstract":"Sample collection, preparation and assaying are a vital activity at all stages of a mining project. Field sample collection is followed by sample reduction in both mass and fragment size to provide a sub-sample for assay. This process can be particularly challenging in the precious metal environment and may require specifi cally designed protocols. One of the biggest challenges is ensuring that all sampling and sub-sampling errors are controlled across the entire rig to assay pathway. In most cases, the primary sampling error (the error at the rig and/or core shed) may swamp the entire process. Challenges also exist throughout all sampling stages when coarse gold is present. In particular, the pulp is likely to contain some liberated, poorly comminuted gold particles, requiring the pulp to be assayed in total to avoid unnecessary additional errors during splitting and handling. PhotonAssay™ is a non-destructive and rapid gold assay technique capable of analysing coarse crushed (<3 mm) 350-500 g samples at a rate of ~70 samples per hour. It displays fast assay turnaround-time, requires lower sta� ng levels to operate, and removes the need for chemicals such as lead or cyanide. These characteristics make it applicable to gold ores, particularly those bearing coarse gold, as only crushing is required (minimal liberated gold) and multiple lots can be assayed. However, this advantage will be reduced if any of the sampling stages are not optimised. The optimisation of a sampling protocol comes from understanding the mineralisation and desired programme outputs. It is not simply a mathematical, or a statistical process, but a complex process taking advantage of orebody knowledge (including gold deportment studies) and application of the Theory of Sampling.","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"24 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140518733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Incinerator Bottom Ash (IBA) is a by-product formed at the base of waste incineration furnaces during the combustion of waste materials, e.g. municipal solid waste. Comprised primarily of metal, glass, and mineral species, the Heavy Non-Ferrous fraction of IBA (HNF) is especially rich in valuable metal concentrations of copper, gold, silver, platinum, and palladium. Serving as an optimal feedstock
{"title":"If Mahomet Won‘t Come to the Mountain, the Mountain Must Come to Mahomet: Transforming Sampling and Preparation Services for Circular Economy Materials through a Specialized TOS Compliant Mechanical Sampling Hub","authors":"Duncan Aldwin Vogel","doi":"10.62178/sst.001.006","DOIUrl":"https://doi.org/10.62178/sst.001.006","url":null,"abstract":"Incinerator Bottom Ash (IBA) is a by-product formed at the base of waste incineration furnaces during the combustion of waste materials, e.g. municipal solid waste. Comprised primarily of metal, glass, and mineral species, the Heavy Non-Ferrous fraction of IBA (HNF) is especially rich in valuable metal concentrations of copper, gold, silver, platinum, and palladium. Serving as an optimal feedstock","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140522940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Giants of Sampling 1: Henry Augustus Vezin","authors":"Alan Rawle","doi":"10.62178/sst.001.008","DOIUrl":"https://doi.org/10.62178/sst.001.008","url":null,"abstract":"","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"308 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139640882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"It‘s Time for Something Different. Sampling Science and Technology (SST): A New Home for TOS forum.","authors":"Kim H. Esbensen","doi":"10.62178/sst.001.001","DOIUrl":"https://doi.org/10.62178/sst.001.001","url":null,"abstract":"","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"32 1-2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140517298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Behold the struggles of fi ve fi ctional mining companies, the stories of which all come from real-world examples. Here are universal alarm bells of great educational signifi cance for technical samplers and management both. We illustrate here with examples from the mining and mineral extraction world, but the implications are universal wherever professional sampling is on
{"title":"Hidden Cost of Poor Sampling and Reconciliation Practices - Educational Lessons Far Beyond the Mining Industry","authors":"Dominique Francois-Bongarcon, Kim H. Esbensen","doi":"10.62178/sst.001.004","DOIUrl":"https://doi.org/10.62178/sst.001.004","url":null,"abstract":"Behold the struggles of fi ve fi ctional mining companies, the stories of which all come from real-world examples. Here are universal alarm bells of great educational signifi cance for technical samplers and management both. We illustrate here with examples from the mining and mineral extraction world, but the implications are universal wherever professional sampling is on","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"16 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140520615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geoff Lyman (1948-2023)","authors":"Kim H. Esbensen","doi":"10.62178/sst.001.009","DOIUrl":"https://doi.org/10.62178/sst.001.009","url":null,"abstract":"","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139640720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tribute to Ian Michael (1958-2023): Publisher extraordinaire","authors":"Kim H. Esbensen","doi":"10.62178/sst.001.007","DOIUrl":"https://doi.org/10.62178/sst.001.007","url":null,"abstract":"","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"90 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139640877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"International Pierre Gy Sampling Association: A New Beginning","authors":"Claudia Paoletti","doi":"10.62178/sst.001.005","DOIUrl":"https://doi.org/10.62178/sst.001.005","url":null,"abstract":"","PeriodicalId":516645,"journal":{"name":"Sampling Science & Technology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140526340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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