There is an online automatic sampler that samples the leach feed. Plant air is injected into the tanks to aid the leaching kinetics. The circuit residence time varies from approximately 28 hours to 33 hours, dependent on mill throughput and tanks availabilities. Additional leach tanks, installed with the plant expansion in 2010, provide a total tank volume of 65,000 m3 that maintains the residence time at 33 hours at 35,000 tpd and 50% (w/w) solids.
I have been practicing as a geological engineer since 2002. My relevant experience for the purpose of the Technical Report is being Director Strategy, Americas, IAMGOLD Corporation and former Manager of Technical Services at Rosebel Gold Mines.
Abstract: A storage system, and a method of data management in the storage system, with non-volatile memory device characteristics determined during an inspection of non-volatile memory devices before a runtime operation of a storage device in the storage system including: a controller in the storage system: a drive-level control unit configured for an update of operational capabilities based on the non-volatile memory device characteristics during the runtime operation of the storage device and for a group of the non-volatile memory devices based on the operational capabilities; and a memory control unit, coupled to the drive-level control unit, the memory control unit configured to receive the operational capabilities for control of the non-volatile memory devices.
I have read the definition of Qualified Person set out in National Instrument 43 -101 and certify that by virtue of my education, affiliation to a professional association, and past relevant work experience, I fulfill the requirements to be a Qualified Person for the purposes of National Instrument 43-101 and this technical report has been prepared in compliance with National Instrument 43-101 and Form 43-101F1.
Suriname weather is dictated mainly by a north-east and south-east wind called the Inter-Tropical Convergence Zone (ITC zone, also known as the Equatorial Trough). The ITC zone passes over Suriname twice a year and results in four seasons:
I am the Director Metallurgy at IAMGOLD Corporation offices, 1111, St. Charles Street West, Longueuil, QC, Canada, J4K 5G4.
In the opinion of SRK, the paired data results are mostly consistent with results expected for this type of gold mineralization. Pulp replicate results are poorer than expected for both SurEx and MinEx sampling and suggest insufficient homogenization during the sample preparation stage at the primary laboratories. The umpire check assays show that the results produced by Filab can be reproduced within acceptable limits by ALS. Umpire laboratory testing for RGM laboratory reveals the moderately poor reproducibility but within expected ranges and no bias.
Feedback and adjustment are an essential part of the EHSMS. Feedback systems include inspections, monitoring, and audits to confirm proper implementation of the ESMPs as well as effectiveness of recommended measures. Corrective actions include response to out-of-control situations, non-compliances, and non-conformances. Actions also include those intended to improve performance.
Sampling procedures are described in Section 10. All samples were collected by, or under the secure supervision of, IAMGOLD-RGM personnel, from the time of sampling through to being received at the primary laboratory.
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Both mechanical filtration and biological filtration take place in a bead filter. This is because useful bacteria stick to the beads and break down harmful substances such as ammonium, nitrite and nitrate. A bead filter can easily be operated manually using valves. The valves can be used to set various functions, such as cleaning the filter.
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