tiny PLETED Fluors: Five fluors were used in the experiment, placed at intervals down along one tower leg. These fluors responded at a lower gamma flux level than did air (primary Teller light). Recovery and the later expected response to the gamma flux from the secondary was absent and is probably due to the saturation of the fluors because of their close proximity to the device. INSTRUMENTATION All ecuipment functioned satisfactorily. The transmissometers indicated good visitility, approximately 72% transmission at shot time. The Pirani gauges on the three vacuum pipes all indicated better than ten microns pressure, which is well below the upper limit of fifty microns,