A Film about the National Hail Research Experiment, 1974

6 copies. ; Film Specifications - 16mm film ; Description - Film depicts rain, hail, hail damage to crops, locally and worldwide. 5 year project, "National Hail Research Experiment". Scientists and technicians gather and analyze data, weather balloons, shows meetings, mapping 600 sq. mile area, 400 data gathering locations. special instruments measure amount of water in clouds and other data. Special high-altitude aircraft gather data above storms. Satellite receivers track weather balloons. Collect rain and hail samples. It is determined that a measurement of 51 dbZ constitutes a 'hail day.' Cloud seeding commences from aircraft over weather cells. Instruments gather and compare data, before, during, and after the storm. Hail suppression seems possible in the near future. ; Location - Town of Grover, in Northeastern Colorado. "Hail Alley". ; Color ; Sound ; Date - Feb. 1974 ; Reel Size - 10.5" ; Approx. Film Length - 625' ; Approx. Running Time - 18 min 25 sec. ; Condition - Some tape residue, edge damage at leader, muddy sound, plays well. ; Opening Credits - NCAR Presents 51dbZ ; Ending Credits - Technical Advisor: William C. Swinbank, Director, National Hail Research Experiment. Directed, Photographed, and Edited by: Marshall Lovrien. Sound by: G. J. Collenberger. Script by: Ronald Cox. Narrated by : Brad Crandall. The National Hail Research Experiment is funded by Research Applied to National Needs (RANN) , A Directorate of The National Science Foundation. NCAR is sponsored by The National Science Foundation. Participating Organizations in The National Hail Research Experiment: Air-Tech Industries, Inc., Atmospherics, Inc., The University of Chicago, Colorado State University, Department of Defense, Federal Aviation Administration, Human Ecology Research Services, Illinois State Water Survey, The University of Illinois, MBAssociates, NCAR, NOAA, The University of Nevada Desert Research Institute, The University of Oklahoma, Oregon State University, James E. Smith, Boulder, Colorado, South Dakota School of Mines and Technology, Southern Methodist University, Western Scientific Services, Inc., The University of Wyoming.