into the drying oven and is taken out and put into trays. We keep trays marked “clean” and "dirty" so we don't get into the wrong one when we do The sieves are cleaned with wire brushes and compressed another operation. air. If you will go back to the viewgraph flow chart (HH-2), I'll go through it as my summary. We obtain the wet weight of the specimen that has come in from the field. We cut up the vegetation. We remove the rock and the large roots. We transfer the remaining material to drying cans. The specimens are dried 10 24 hours at 1050C. 11 shown pictures of weighing on the scales. 12 operations. 13 mill for three hours, separate the less than five hundred micron material 14 on the screen. “15 hour. They come out of the ovens, are weighed. I have not There are a number of those Put the specimen onto the ball We add the grinding balls. Send the coarse material back into ball-milling for another Sieve again. Ball mill for an hour. Make our final sieving. All 16 of the fine materials have been added together from those three grindings. 17 The fine material is composited, The coarse material goes off to storage. 18 mixed, and we will start weighing out the specimens for radiochemistry. In 19 the procedure, if we have the material, we will weigh out two specimens for 20 cesium-137. One goes to radiochemistry, and one we keep in storage. 21 Sooner or later there are going to be those calls for duplicates and we 22 prefer not to have to go searching for the duplicate in storage. 23 We make up, and I show a dotted line because it's not a procedure that 24 we perform at the time that we do the weighing out for the cesium, and make 25 up a 200-gram composite sample from two specimens which represent incre- 26 ments one and two or increments three and four from the initial profile. 27 The 28 material, we make up two of the plutonium composites. remaining fine material goes to 146 storage. Again, if we have the