_~ CHAIRMAN MOSELEY: Can we come back to order and resume. Could we continue with the presentation on the soil sampling. DR. HAWTHORNE: This is a schematic (HH-1) of how the sample gets _moved through the processing scheme in the laboratory. ~~ ee and The scheme is a hybrid. It is partly how EML recommends doing samples it did is partly how REECo soil sample preparation for the NAEG program.’ : We wanted:to take components of each methodology. We liked the REECo part where thegr inding is carried out in a closed container so that there 10 is no chance of; cross contamination of either the laboratory or nearby Ll specimens and there—were particle size requirements that came from the way ~_ 12 EML does their processing. — . eee 13 We were initiallyanticipating that we would not have to process the 14 entire sample because in the fourth increment at those places where we have 15 a 10-30 centimeter increment ;—the weight of the specimen can be up as high 16 as 30 kilograms and that is a lot of< material to put through a little round 1? screen. ~~" _ 18 We believe we have successfully combined portions of each of the pro- 19 cedures into a system that can be effectivé—Both in the processing context 20 and efficient in the manpower requirement. 21 please. 22 Again I have divided 23 smaller groups (REECo 30). 24 doing the processing. the different Could I have the other slide, steps in ee the processing into These are the preparation before you begin The processing itself is eattedball-milling, which 25 _ will-have an obvious derivation of name. Then we drop down to the exciting 26 part which is removing the aliquots for radiochemistry ‘which js what all of 27 the activity is leading towards and, our final step is again 28 most important one, and that is cleaning up the equipment before you start 141 probably the