Proposed Limpopo West Mine Concept Study ... - SRK Consulting

SRK Consulting: 447493: Limpopo West Geochem Page 205.1.1 Reviewed ReportsGeochemical information was obtained from the following sources: EIA Report, Sasol Mafutha Pre-feasibility Project, 2009; Sasol Mafutha Geochemical Characterisation Report (SRK, 2011); Groundwater Resource Assessment of the Waterberg Coal Reserves Report (IGS, 2009);5.2 SamplingHatch Limpopo West Mine Concept Study Report, andSasol geological database consisting of core log profiling sheets.Due to the lack of preservation of core samples, and unavailability of rock cores for SRK to sample,recourse has been made to data collected during the IGS investigations which undertook a samplingprogram within PLWM lease area. SRK understands from the IGS investigation, that two explorationboreholes samples comprise overburden lithologies from the lease area, with the other samplescollected by the IGS on the lease area representing coal seams, as described in Table 5-1. The twoboreholes which SRK understands to represent overburden are however, not included in thegeological log information provided by Sasol to SRK, therefore, the exact lithologies sampled asoverburden could not be confirmed.Table 5-1: Summary of Exploration Boreholes sampled by IGSBorehole IDFarmIGS SampleIDSample Type *Depth Range(m)Sampled Zone No.W228030 Welgelegen W overburden 6.26 - 24.72samples takenaccording to depthsG250040 Groenfontein WGH overburden76.24 - samples taken147.90 according to depthsCoal and 29.17 -G218016 Grootwater WGDoverburden 145.64 7,6,5,4,3,2G226006 Geelbekpan WGACoal andoverburden - 11,10,9,8,7,6,5,4,3,2G226010 Geelbekpan WGBCoal andoverburden60.97 -127.63 11,10,9,8,7,6,5,4,3,2G226014 Geelbekpan WGCCoal andoverburden - 11,10,9,8,7,6,5,4,3,2G226020 Geelbekpan WGGCoal andoverburden - 10R 303 015 Ringbult WRACoal andoverburden - 1, 2, 3, 4, 5Notes: *Coal and overburden assumed due limited information on depth and lithological unitsThe samples were crushed and composite were prepared for individual samples, for Welgelegenand Groenfontein farms the samples were composited for every 1 m of core intersection. For thesamples collected from Grootwater, Geelbekpan and Ringbult farms, the composite were preparedbased on the coal zones as included in the section above. The details pertaining to the number ofsamples and static geochemical testing undertaken on the samples by IGS is presented in Table5-2. Although large number of samples was collected, the lack of information on key lithological unitscompromised the representativity of the samples.GOGP/LAKJ Report_April2013_19April2013 (1)_Final_Ludi_22052013 April 2013