Professor Pontecorvo 12. Brigadier Clarke asked the Minister of Supply on what branches of atomic energy research Professor Pontecorvo was employed in any establishment of his; and how far he has received indications that these branches of research have been forwarded in foreign countries owing to the knowledge carried out of this country by this man. Mr. Sandys Professor Pontecorvo was employed at Harwell on long-term nuclear research and was not directly concerned with any specific project. I have no information about his activities since he left this country.