CaseDetails
    Summary
    Case ID
    23801
    Case Status
    Heritage Authority(s)
    SAHRA
    NWPHRA
    Proposal Description
    Phase 1: Geological desktop studies will initially be done to confirm the area of interest. Further field work, testing and mapping of ‎the possible reserve and gravel runs to confirm the areas where test pits will be done. This will mostly be done by a professional geologist ‎assigned to the proposed project. 6 Months will be required for the assessments.
    Phase 2: Test pits will be made (1m x 2 m x ± 2m deep), on a grid of 100 x 100 meters and where necessary on a 50 x 50 meters grid where the gravel outcrops. These test pits are made with a 30 ton excavator, to determine if any diamond bearing gravel does occur. This test pits will be closed immediately before the excavator move on to the next one. They will be examined visually, and a picking sample will be taken if necessary. It is envisaged that 200 test pits will be excavated, and 12 months are needed for Phase 2.
    Phase 3 Bulk Sampling In the areas where the proposed mineral was identified through test pits (Phase 2), the quality, grade, and depth need to be confirmed. Bulk sampling will be used to determine if the gravel does have diamonds the gravel needs to be taken out and tested, by putting it through the washing process. Trenching will be used to open the gravel to get a representative sample for testing. The trenches will be ±10 x 60 x ± 2 m (deep). In one trench ± 1’200 m³ (± 1’359.6 ton) gravel will be exposed depending on the gravel depth and tested with 14 feet washing pan at a rate of 8m³ (10 ton) an hour it all depends on the depth of the gravel, which amounts to 1’280 m3 per month treated through the washing pan. The total prospecting area is 2’202.8877 hectares, thus it is anticipated that because of the variable gravel depth, a bulk sample of ±38’400 m³ over the total area is needed to get a representative sample. 1’280m3 (Gravel) will be tested per month by making trenches on different locations over the whole prospecting area, where the possibility of diamond bearing gravel was identified with the test pits in Phase 2. These trenches will be ±100 m apart from each other; the envisaged positions of the trenches will be indicated on a map at the end of Phase 3.
    The topsoil will be removed with an excavator and stored on a separate stockpile for rehabilitation purposes. The overburden will then be stripped and placed on the side of the excavation. The gravel is then removed with an excavator and transported with a frond end loader to the washing plant consisting of 14 feet pan. All processing will be done on site and the pubble will be washed directly back into the excavation. The rough out of the pan and oversize stones will also be put directly back into the open excavations. The concentrate out of the pan will be sorted by hand where the diamonds will be recovered, and the grade of the prospecting area determined. Taken at an 8-hour working day, 5 days a week and 20 days a month, the applicant will be able to process 1’280m³ a month, depending on variables such as gravel depth, power supply, breakages, and weather conditions. The moving of the pan and processing of 38’400m³ will take about 30 months (2.5 years) for Phase 3, which will result in ±30 trenches to be excavated and rehabilitated over the 2’202.8877 hectares. See Figure 4 for Ore Processing Flow Sheet.
    Phase 4: Final Geological Report will be compiled after completion of all test pits evaluation and final processing of all bulk samples by the qualified geologist, which will assemble all test results and evaluated the finding with the area applied for. A final geological report will be compiled to bear the results of all test work done and how feasible further applications for renewal or migration to a mining right will be
    Province(s): North West
    Author
    dera.environmental
    Last modified
    11/11/2024 - 11:45
    Official
    Case Officers
      Location
      Location
      Decisions, Comments + Permits
      Decision Date Type
      Interim Comment Access Document