Soft rock feed is maintained through two grizzlies using one dozer and two backhoes, with an active stockpile maintained at approximately 200,000 tonnes. Hard rock/soft rock blending to the SAG feed conveyor is maintained by two 1.8 m x 6.9 m apron feeders respectively.
At the effective date of the Technical Report, to the best of my knowledge, information, and belief, Sections 1 to 5, Section 6 pertaining to the RGM Concession, and Sections 19 to 27 of the Technical Report for which I am responsible contain all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.
Patents were granted for Triune IP’s adaptive power control for energy harvesting, Reddy Ice’s apparatus for storing and dispensing bagged ice, OraMetrix’s Ortho treatment planning that uses a lip tracer, Dell’s out-of-band beacon for securing IoT devices, and Essilor’s self-healing hard coatings.
Swath plots were compiled on vertical sections and plan views to check the consistency of the interpolation. For the updated block models, values were compared with cell-declustered data, Nearest Neighbour model (NN). No pits were used to constrain the data as swath plots are designed to check the overall quality of an estimate.
The majority of waste material from Koolhoven will be sent to the Koolhoven waste dump. Surface stripping from Phase KH_PH2 will be sent to the J Zone waste dump as it is closer.
All DD drilling was performed by Major Drilling using three UDR 200D track-mounted drill rigs. RC drilling was contracted to FTE Forage, who used one Schramm T450 RC drill rig. An ancillary support of Hurricane B6 booster and Sullair 1,350 cubic feet per minute (cfm) at 350 pounds per square inch (psi) or 1,100 cfm at 500 psi compressors was added to push off groundwater. The same procedure as for DD drilling is implemented during the pre-drilling, rig set-up, and post-drilling stages.
In the last three years, an important effort of local and regional mapping was carried out to build a new regional 3D geological model (including lithology, alteration, and structures).
For the composites, a total of six drill holes in full HQ core were dedicated to the test work. The laterite and the saprolite were only tested for the Bond ball mill work index and extractive metallurgical tests whereas the transition and fresh rock were also tested for other comminution parameters (Bond low energy, JK Drop Weight, SPI, SMC, and Bond abrasion index) and extractive metallurgical tests. The three holes located to the northwest (NW) of the pit will be used for the preparation of the four composites by rock type and the three holes located to the southeast (SE) of the pit will be used to form also four composites by rock type. Figure 13-8 illustrates the spatial localization of the composites within the pit shell.
Each pit in the RGM concession forms a distinct GEMS project and so, constitutes an individual database. The GEMS projects are made of different workspaces which are a grouping of data within a project on the basis of type, such as points, drill holes, polylines, polygons, and triangulations (solids and surfaces). Workspaces are organized into tables, with each workspace consisting of at least one header table and potentially an unlimited number of sub-tables.
The production starts at a rate of 67.3 Mtpa in 2019 and steadily increases to a rate of 74.0 Mtpa from the RGM pits and 30 Mtpa from the Saramacca pit until 2021. The production rate stays relatively constant until 2026 from the RGM pits and is steady at 30 Mtpa from the Saramacca pit until 2029, then it starts to decline until the end of production in 2033. In the later years, production rates are reduced due to longer haulage distances, higher percentage of fresh rock, and the number of available working areas at the pit bottoms, which are not as productive as on the upper benches.
Reviewing available core to identify and characterize the main structures controlling gold mineralization.
Some leak detectors offer more than after-the-spill sensors. Certain devices, when wirelessly connected to other gear, can automatically close a pipe valve to stem the flood. Other detectors can read wide temperature variations in your home, doubling as fire or ice sensors as well.
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