1st June Chairman:J．MINCZEWSKI(Poland)

Radioactivation analysis in a nuclear reactor＆G．B．COOK(U．K．)

Spectrometer for the determination of positron and gamma-ray cascade-emitting nuclides＆K．LJUNGGREN(Sweden)

Neutron activation applied to geochemistry＆W．HERR(Germany)

2nd June,morning Chairman:A．H．W．ATEN(Netherlands)

L＇analyse par radioactivation au service de l＇industrie＆P．LEVEQUE(France)

Experience in the U．S．A．on the use of radioactivation analysis＆G．W．LEDDICOTTE(U．S．A．)

2nd June,afternoon Chairman:J．H．MULLER(Switzerland)

Radioactivation analysis in biochemistry and medicine＆J．M．A．LENIHAN(U．K．)

3rd June,morning Chairman:K．LJUNGGREN(Sweden)

Activation analysis of minor constituents in high alloy steels＆J．HOSTE(Belgium)

Analyse systématique de l＇aluminium et du fer de＂zone fondue＂après irradiation à la pile atomique＆PH．ALBERT(France)

Determination of trace element diffusion in quartz and in germanium＆G．LELIAERT(Belgium)

3rd June,afternoon Chairman:HENRY SELIGMAN(Joint Commission on Applied Radioactivity)

A method for the detection of mercury by radioactivation analysis＆K．LJUNGGREN and T．WESTERMARK(Sweden)

Determination of tantalum in high-tantalum ferro-alloys＆D．GIBBONS and H．SIMPSON(U．K．)

Intermetallic diffusion in gold-lead systems＆A．ASCOLI and E．GERMAGNOLI(Italy)