NASA Photo ID: S85-31777           File Name: 10061971.jpg
  Film Type: 35mm BW                 Date Taken: 05/02/85
  Title: Dr. Roger Kroes in the payload operations control center
  Dr. Roger Kroes, co-investigator for a crystal-growth experiment aboard the 
  science module on the Shuttle Challenger. He is in the payload operations 
  control center (POCC) in JSC's mission control center.                   
  Subject terms:
  CHALLENGER (ORBITER)                    
  GROUND BASED CONTROL                    
  MISSION OPERATIONS                      
  SPACE SHUTTLE MISSION 51-B              
  SPACE SHUTTLE PAYLOADS                  
  SPACEBORNE EXPERIMENTS                  

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