reviewed by the lab project officer to make sure that it looks reasonable, there are no screw-ups in it. When the data has been certified, then a letter is written to DRI, and they receive the results of the plutonium. Bernie, let me have the next one. We'll go over these boxes one by one (32). This is breaking down the chemistry box. As soon as the sample comes in, it goes directly to chemistry and this is roughly what happens to it in chemistry. (Figure 33). The initial box is the leach. What happens is that you dissolve most of the metals in the soil with acid. It comes off in the 10 acid leach. 11 essentially, do the same thing. 12 of the other draughts that came out with the acid. 13 get to the bottom of the third box, you have only plutonium. 14 box is where you electroplated, and I'l] show you our electroplating appa- 15 ratus. 16 platinum disk. 17 troscopy on the plutonium, 18 it's much cheaper, but that interferes with the spectroscopy, so we do it i9 on platinum and, of course, the platinum can be reused. 20 lost. 21 You discard the rest of the soil. The second two boxes, They separate out the plutonium from all By the time that you The bottom This is where the plutonium is put on as a thin film on top of the Now, platinum is used because you want to do mass specand we normally use stainless steel, I have some slides here. because It's not really This is the initial step in the leach. We 22 have the soil in the beaker and the chemist is pouring the acid in it. It 23 gives you an idea of how much soil we start to analyze and this is normally 24 done on a hot plate and it is done overnight. 25 soil once the acid goes in there. 26 this for quite a while. 27 You put the acid in and you put it on a hot plate and heat it and leave it 28 overnight, pour off the liquid which contains most of the plutonium and for This is what happens to the It starts foaming and working. The way this is done, 162 It does it's done in four steps.