The first direct exposure to Lunar material for Crew Reception Personnel probably happened late Friday, 07/25/1969. Terry Slezak (displaying Moon dust on his left hand fingers), MSC photographic technician, was removing film magazines from the first of two (2) containers when the incident occurred. As he removed the plastic seal from Magazine "S", one of the 70mm magazines taken during Apollo XI Extravehicular Activity (EVA), it was apparent that the exterior of the cassette displayed traces of a black powdery substance. Apollo XI Commander Neil Armstrong reported during the mission that he had retrieved a 70mm cassette which had dropped to the Lunar surface. Seen in the backgound is John H. Boynton. ( S69-40054 ) MSC, Houston, TX