In this report an estimate of the pion dose from a stopping {pi}{sup -} beam is made. Dose rates of 15 krad {center_dot} gram/min are obtained. These are adequate for clinical use.

This document consists of a memo from W.D. Ferguson, Assistant Laboratory Director at Hanford, to Mr. R.L. Ferguson, Director of the Contract Administration Division at the AEC, and the scrap activity sheets for fiscal year 1972. Differentiated inventories of plutonium and uranium scrap are compiled.

A request was made by Purex Processing to sample analyze the tritium released from the Purex k. The analyses show that over 90 percent he emit-ted tritium is in either the ammoniacal or elemental form, probably elemental. The rate of emission varies widely depending on the point in progress of the dissolution. The Purex stack air was sampled for tritium in the 293-A Building by breaking the iodine monitor sampling line (Figure 1).

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Plutonium is a man-made element whose behavior in the marine environment is inadequately known at present. It has been studied intensively in connection with production of weapons and power sources and has been characterized as an extremely toxic substance. Nevertheless, only a few dozen measurements have been made of concentrations in seawater and in the associated organisms and sediments. The first of these were as recent as 1964. There are reasons to believe its chemical behavior in the ocean is different from what has been observed on land, and that it will be difficult to predict how plutonium will distribute itself in the ocean. The consequences of increased environmental concentrations of Pu are discussed. (auth)