BULK DISPOSAL 
From the financial point of view bulk disposal of radioactive 
wastes looks more promising than does disposal of packaged wastes. 
The oceans do have a large volume of water available for dilution. It 
remains for the physical oceanographers to tell how bulk disposal 
can be accomplished and how soon the radioactive wastes become mixed 
(27) 
and diluted. 
Ecological Cycle as Limiting Factor. 
It seems that the ecological cycle is the limiting factor in 
sea disposal. It is not the dilutions possible but the biochemical 
concentrations which will limit bulk disposal, i.e. one organism 
will concentrate to a factor of 10° and a different one will consume 
4 
the first organism and produce a further concentration of 10° for 
8 (anon . ) 
a total, say 10 in two jumpe. This may happen with a few elements 
but not with many of the fission products. Most of the isotopes of 
coneern will not be reconcentrated most will be rejected when the 
second organism eats the first ee However, the limitation 
imposed by the ecological system does not mean that a status quo 
situation must be maintained in the sea. There may be very marked 
changes in the ecological system without significant losses to the 
world. The present system represents equilibrium for the present set 
of conditions; if the conditions are shifted a little, the system 
(6) 
adapts itself naturally. 
Model Experiment Feasibility. 
It may be possible to run a model experiment to study ecology. 
It is almost impossible to duplicate the ecology of the sea but it 
can be approximated enough so that a volume of water could be treated 
a6ili= 
