The choice of composite length is mainly based on the following criteria: height of mining bench, ore zone thickness, length of assays, and reconciliation with production numbers. All composites are constrained within the ore zone and laterite solids first, and secondly, within the lithology and weathering solid limits. Poorly representative composites are not taken into consideration for resource estimation. These can include composites which are missing more than 50% of assays and/or where the composites that are less than 1 m (for 5 m composites) or 0.6 m (for 3 m composites). The smaller composites have possibly been created at the end of a solid interval or at the bottom of a hole. They are discarded from the composite data set.
Table 14-10 presents the evolution of the Mineral Resources over the last five years. Overall, the present Mineral Resources are relatively equivalent in terms of ounces of gold content to the December 2017 resource estimate. Most of the difference is explained by mining depletion as well as changes in the economical parameter used for the Resource (Whittle) shell optimization. As a general trend, from 2012 to 2016, the decrease in Mineral Resources is mostly due to the decrease in the gold price and an increase in costs and mining depletion. In June 2017 a new estimation approach, as well as a new resource (whittle) shell optimization strategy resulted in an important increase in the Mineral Resources. The important increase in Inferred Mineral Resources in June 2017 represents potential new targets for definition drilling in order to convert the Inferred Mineral Resources to Indicated Mineral Resources.
Mineral Resources reported at a weighted average cut-off grade for Rosebel (excluding Saramacca) of 0.18 g/t Au for saprolite, 0.23 g/t Au for transition material, and 0.35 g/t Au for fresh rock material. Average cut-off grades for Saramacca are 0.25 g/t Au for laterite and saprolite, 0.30 g/t Au for transition material, and 0.50 g/t Au for fresh rock material.
A mine deployment plan that supports natural drawdown of the saprolite/structured saprolite through exposing the slopes earlier in the central and southern pit areas. Excavate shallower interim platforms that can be utilized for surface water management and provide space to install active depressurization equipment and/or horizontal drain holes, if needed.
Gold grade statistics, from the set of composites, are calculated using GEMS Geostatistical module or GSlib-type software. Statistics for raw assays and composites, used during estimation, are presented in Table 14-4 for RC holes and Table 14-5 for DD and exploration RC hole data used. The two limits (High Grade Limit and High Grade Transition Limit) that are used in the treatment of high grade results (see Section 13 – Ongoing Test Work for details) during resource estimation are determined from these statistics. The first one, the High Grade Limit, corresponds to outliers observed in histogram plots. The second one, the High Grade Transition Limit, corresponds to inflection points representing different grade domains on the curve of cumulative probability plots.
Most of metallurgical test results from this FS program can be found in COREMs report entitled Rosebel Saramacca Metallurgical Testing for the Feasibility Study no. T2300, (COREM, 2018).
This piping layout is neither primary/secondary nor a “header-type” multi-zone system. It’s undefined among proven hydronic piping designs.
The scope of the Saramacca project for ESIA purposes is for the planned infrastructure and activities during the construction, operations, and closure phases of mining within the Saramacca concession and includes the transportation corridor between Saramacca and the RGM concessions. The ESIA was based on the engineering and mine planning available at the time of its submission in July 2018.
Check assaying of coarse reject and pulp material was performed on approximately 2 percent of MinEx samples at the primary laboratory, chosen randomly or to corroborate specific assay results. Approximately 3 percent of SurEx coarse duplicate samples were submitted for similar check assaying to the primary laboratory.
Systems and methods for assessing nerve inflammation based on a segmented magnetic resonance image volume Patent No. 10013758
Abstract: A system, method, and computer program product are provided for a database associating a plurality of device vulnerabilities to which computing devices can be subject with a plurality of remediation techniques that collectively remediate the plurality of device vulnerabilities. Each of the device vulnerabilities is associated with at least one remediation technique. Each remediation technique associated with a particular device vulnerability remediates that particular vulnerability. Further, each remediation technique has a remediation type are selected from the type group consisting of patch, policy setting, and configuration option. Still yet, a first one of the device vulnerabilities is associated with at least two alternative remediation techniques.
Where core orientation is available, the core is split along the orientation line; the orientation being preserved by the arrows along the line pointing downhole.
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