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• Improvement opportunities are identified in the following areas; <br />• Specifications exist for the minimum and maximum length of ply -by -ply (sub <br />sectional) samples to be taken in coal and non -coal strata, however ply sampling is <br />not always undertaken consistently. TS recommends that consistent ply -by -ply <br />sampling be implemented. <br />• Procedures for the handling, sampling, labelling, transport and storage of core to <br />preserve the integrity of the sample have been established. The current Collom <br />exploration cores are stored for up to 10 days before being sent to the laboratory in <br />Denver. There are apparent issues surrounding the measurement of the moisture <br />content of Collom coal and therefore the determination of ASG and Specific Energy. <br />It is essential that every means be taken to preserve each core sample in an "as <br />recovered" condition. TS recommends that CCC investigate ways to reduce the time <br />lapse between core recovery and delivery to the laboratory. <br />Distribution of drill holes is not clearly based on a regular grid or a statistically <br />determined pattern. TS recommends that the statistics of coal thickness and key <br />coal quality data at Colowyo be investigated to improve understanding of spatial <br />variability and confirm the appropriate drill hole spacing. <br />2.3.2 Coal quality - Moisture <br />• As a significant diluent, it is essential that the moisture content and its various fors be well <br />understood in order to accurately estimate both the quantity of coal available and the <br />effective quality of the coal (especially on an "as received' basis). <br />• <br />TS <br />Evidence from historical and recent CCC analytical programs indicates that there is no <br />relationship between Air Dried Moisture (M and Equilibrium Moisture (M, Consequently, <br />TS recommends using the Dry Basis as the common basis for comparing recent test work <br />with historical data. <br />A comparison of historical data of the total moisture content of CCC coal is shown in Figure <br />2 -1 below. The production data are generally derived within one day of being sampled. <br />These results are used for quality control and relate to currently mined seams only. The data <br />for KEC and others refer to all seams analysed, not Just those currently being mined. <br />ccc c....airy....... <br />c�•anw. of Tm.i M.Icmn m.ma,no„ q c,n,•.,,r <br />V�s1 Maw <br />,015 <br />G+u M,s 1,69 <br />XEC MCS, 1591 <br />Mw Pree pNMmn IOO <br />RI <br />