Complex sentence: Perhaps the most controversial group head would be Seth Neddermeyer, the head of the Implosion Experimentation Group; for the time being, Parson accorded a relatively low priority to this work.
Split into simpler sentences: Perhaps the most controversial group head would be Seth Neddermeyer, the head of the Implosion Experimentation Group. For the time being, Parson accorded a relatively low priority to this work.