——_ 22h went as high as 15D per quert. Now, in terms of -- well, let me say Just one thing, first. Back here, around April of '54, we also purchreed . 150 pounds of powdered milk to run as a control in order to deterrine whether contamination had occurred at any point in this sample and this is the result of a continuous monitoring of this cone trolled milk as we call it, Say from Januery 'ss§ through thie period when we discovered this. rice, Then as you o2n see, it's running between two and two and a helf D/M per quart ag it was at the beginning of 1954, We were also continuing this control monitoring except we ran out of the initial control at this time, We purchased a new batch because we are now at a higher level because this is during the same rice, In terms of tolerance, assuming 1500D per minute per quart of the highest result we have obtained to date, is about one per cent, And as of the fall of 1955, the laet sampling period, we were running about 5D/M per quart which 18 about 1/300 of tolerance, Exactly what thie meens in terms of human accumulation

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