blasthole cone sampling experiments for flitch mining

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  • Reconciliation uncertainties in mine production - Geology ,

    Mining open cut ore the success of reconciliation will depend on how well you can constrain mining ore and minimise dilution and ore loss It is important if mining a bench in two flitches the blast heave is appropriately accounted for to prevent over digging the top flitch...

  • 3 Technologies in Exploration, Mining, and Processing ,

    Mining can be broadly divided into two categories: surface mining and underground mining Nonentry mining is associated with in-situ mining and augering Each type of mining has numerous variations, depending on the combination of deposit type, rock strength, depth, thickness, inclination, roof, ,...

  • Yhd-33 3620 The Jorc Code - 266 | Business Process | Mining

    Oct 07, 2016· Sampling for resource modelling/grade control occurs in dominantly four ways: 1 on surface diamond drill holes ( RC holes) during Inferred Resource stage drilling and on underground diamond drilling when infilling to Indicated and Measured Resource status; 2 on mining faces during ore drive development (chip samples); 3...

  • offers new RC grade , - International Mining

    Jun 11, 2013· continues to expand its blasthole product offering with the addition of the reverse circulation (RC) kit for the DM45/50 mid-range blasthole drill Based off proven systems, components, and technology the RC kit is designed to meet the demands of today’s expanding mining market by offering the added dimension of in-pit grade control...

  • Adaptive sampling applied to blast-hole drilling in ,

    Apr 01, 2015· Studied if adaptive sampling (AS) can optimize blast-hole drilling in surface mining Compared AS with random sampling (RS) to highlight benefit of adaptivity AS results in fewer penetrations through the target than RS AS optimizes blast-design by giving close-to-ideal stopping distances from the target...

  • Investigating particle size: Distribution of blasthole ,

    Blasthole sampling practices were investigated at the Erdenet copper and molybdenum mine in Mongolia to address grade reconciliation issu The goal of the study was to determine if the particle ....

  • Reconciliation uncertainties in mine production - Geology ,

    Mining open cut ore the success of reconciliation will depend on how well you can constrain mining ore and minimise dilution and ore loss It is important if mining a bench in two flitches the blast heave is appropriately accounted for to prevent over digging the top flitch...

  • Kirkland Lake Gold Ltd - Exhibit 99125 - Filed by ,

    Big Hill surface Mineral Resource has been very effectively de-watered by the underground mining operation In a handful of holes, samples were damp after a rod change Where a sample could not be effectively riffle split it was spear sampled using a PVC spear, - Sample volumes were not routinely recorded pre-1999...

  • Mompati Prof Same - Database Geologist - Khoemacau Copper ,

    • Planning and coordinating both RC and blasthole sampling activities • Insuring adherence to agreed turnaround times for the lab results , • Flitch plan designs and ore mark-ups in the pit , all of the key issues are understood by all parties eg survey, planning, mining production crew etc...

  • First reverse circulation kit to use an DM 45 for in-pit ,

    Jan 10, 2017· A reverse circulation (RC) kit that enables mines to use their DM45/50 blasthole drill rigs for in-pit grade control is now being successfully operated in the field The first mine to take advantage of this technology is the Barrick Porgera gold mine in Papua New Guinea, located high in the mountains about 600 km northwest of Port Moresby...

  • mining - Surface mining | Britannica

    mining - mining - Surface mining: It has been estimated that more than two-thirds of the world’s yearly mineral production is extracted by surface mining There are several types of surface mining, but the three most common are open-pit mining, strip mining, and quarrying These differ from one another in the mine geometries created, the techniques used, and the minerals produced...

  • Surface drill rigs — Mining and Rock Technology

    Our rotary blasthole drills are designed to offer you the highest production rates in large quarries and surface min Dedicated to your rock drilling needs In order to meet the demands of mining and rock excavation industry, surface drill rigs are all ,...

  • Major Mines & Projects - Mining Intelligence and News

    The number of samples taken per blasthole is material-type dependent Blastholes in waste are typically sampled twice on 5m intervals (top half and bottom half) Blastholes in ore are typically sampled three times at 33 m sample intervals Flitch height is variable Waste is typically mined on a 10 m flitch...

  • (PDF) DICTIONARY OF ARCHITECTURE AND CONSTRUCTION | ,

    Academiaedu is a platform for academics to share research papers...

  • Methods, Equipment and Results for Blast Hole Sampling ,

    Mar 09, 2021· This week, we continue our series of posts on the topic of Blast Hole Sampling and Analysis in Ore Grade Control in Mining and today we are talking about IMA Engineering’s Methods, Equipment and Results for Blast Hole SamplingThis article and the attached white paper are the continuation of our previous article that you can read here Moving towards automated sampling and ,...

  • Grade Control Paper 2 - SlideShare

    Mar 01, 2016· Grade Control Paper 2 1 Grade Control in the Southern Middleback Ranges — A Case Study D Crawford1 , P Leevers2 , S Parsons3 , G Solly4 and S Nielsen5 ABSTRACT Hematite ore has been mined in the Southern Middleback Ranges as blast furnace feed for the steelworks at Whyalla, by what was then BHP, since 1991...

  • Mompati Prof Same - Database Geologist - Khoemacau Copper ,

    • Planning and coordinating both RC and blasthole sampling activities • Insuring adherence to agreed turnaround times for the lab results , • Flitch plan designs and ore mark-ups in the pit , all of the key issues are understood by all parties eg survey, planning, mining production crew etc...

  • Nelao Udjombala - Mine Geologist (production, projects ,

    Mine Geologist (production, projects, Reverse circulation drilling) Rio Tinto Feb 2011 - Present 10 years 6 months Rossing Uranium, Swakopmund, Namibia Diamond Drilling rig supervision, core logging and Data Handling & analysis Quality Control/Quality Assurance Reporting ....

  • Stephane BROCHOT - Scientific & Technical Manager - Caspeo ,

    Management of projects for the implementation of metal accounting including expertise in sampling and material balance Expertise in gold ore sampling and processing at the disposal of the gold mining companies, from small to large mine scale, to enhance their production Training courses in this field around the world...

  • A Machine Learning Approach for Material Type Logging and ,

    Aug 17, 2021· The chosen mode of validation is hence largely dependent on the goal of the experiments In the case of random k-fold cross-validation, it is generally known that blasthole sampling is a sparse process, where not all the drilled holes would be considered for logging physical materials or laboratory sampling of chemical assays...

  • Mining Equipment, Breaking, Drilling & Crushing Products ,

    These mining drill rigs are uniquely designed to produce long and straight holes at depths greater than 100 meters (328 feet) Rock support drill rigs The range of rock support drill rigs is designed for a wide array of hard-rock mining operations, tunneling and civil engineering applications...

  • Godwin Lowor - University of Mines and Technology - Ghana ,

    •RC and blasthole logging, sample supervision, ore spotting, and bench face / pit wall mapping •Update production statistics, drill hole sectional interpretations, and flitch plan generation •Delineate and digitize ore blocks for mining, assist with grade control and mill reconciliation...

  • Improved Drill Shroud Capture of Respirable Dust Utilizing ,

    Surface mine blasthole drills have been shown to generate large amounts of respirable dust during dry drilling A past NIOSH study documented that time-weighted average dust concentra-tions from area sampling in the vicinity of the drill shroud can potentially range from 868 to 9515 mg/m 3 (Organiscak and Page, 1995)...

  • Grade Control Paper 2 - SlideShare

    Mar 01, 2016· GRADE CONTROL Blasthole sampling Traditionally sampling had been carried out at the SMR operations from the cuttings at the blasthole collar using a hand-held trenching tool The sample supposedly being representative of the 8 m bench being drilled Subdrill was estimated by eye and a portion of the collar was scraped away to take this into ....

  • Sampling 2018 ESBENSEN Optimal grade comparison experiment ,

    BH vs RC drill sampling experiment • 53 Blast Holes were drilled and samples were extracted from the coarse BH cone • Samples were extracted using the current manual sampling method • Samples were also extracted with an alternative full segment approach • From 18 of the total 53 blast holes, the complete BH material was collected, weighed and split representatively in the field ....

  • (PDF) Advanced Open Pit Planning and Design 2014 for ,

    A review of cut-off grade policy models for open pit mining operations By Iván Cárcamo Simultaneous stochastic optimization of an open pit gold mining complex with supply and market uncertainty By Roussos Dimitrakopoulos Download pdf...

  • Investegate |Adriatic Metals Announcements | Adriatic ,

    Oct 15, 2020· Cost Estimate The capital and operating cost estimates were compiled by Adriatic with inputs from various engineering consultants, including Ausenco for the process plant and infrastructure and Axe Valley Mining Consultants Ltd ("Axe Valley") for the mining costs As this is a Pre-Feasibility Study, the cost accuracy is estimates at ± 25% and has a base date of September 2020...

  • SAMPLING 2010 CONFERENCE - Willkommen

    SAMPLING2010CONFERENCE 11-12MAY2010 PERTH,WESTERNAUSTRALIA TheAustralasian Institute ofMiningandMetallurgy Publication Series No3/2010 AttJslfllfTI TH6 MINERALS ....

  • Reducing Costs without Compromising , - Mining Geology HQ

    Oct 08, 2016· Blasthole (and even resource drilling) sampling costs may be optimized in well-informed and low-variability areas of an ore body For example, if an entire shot of predicted high-grade ore is supported by blasthole cone logging and historic data, it likely does not require sampling coverage to confirm what the mine geologist already knows...

  • Kirkland Lake Gold Ltd - Exhibit 99125 - Filed by ,

    Big Hill surface Mineral Resource has been very effectively de-watered by the underground mining operation In a handful of holes, samples were damp after a rod change Where a sample could not be effectively riffle split it was spear sampled using a PVC spear, - Sample volumes were not routinely recorded pre-1999...