Rubuta ci gaba ga wannan sakin layi - A shekara ta 1965, an ba shi lambar yabo ta Penrose ta Geological Society of America da kuma lambar yabo ta Ma'aikatar Harkokin Cikin Gida ta Amurka. An zabe shi zuwa Kwalejin Kimiyya da Kimiyya ta Amurka a shekarar 1966. Yana halartar taron taron kasa da kasa na kasa da kasa a Prague a watan Agusta, 1968, lokacin da Soviets suka mamaye
An kwashe shi zuwa Nuremberg.