Page:CAB Accident Report, United Airlines Flight 21.pdf/4

 were completed under careful observation of staff experts of the Board.

Public Hearing

A public hearing was held in the City of Chicago beginning on December 11, 1940, and continuing through December 14, 1940, at which 48 witnesses were heard and 99 exhibits introduced. The Board designated G. Grant Mason, Jr., one of the five members of the Board, as Presiding Examiner, and S. G. Tipton, Assistant General Counsel of the Board, as Associate Examiner. Also participating in the hearing were Jerome Lederer, Director of the Safety Bureau; Robert D. Hoyt, Assistant Director; Frank E. Caldwell, Chief of the Investigation Division; Paul Gareau, Aerologist of the Safety Bureau; and Phil C. Salzman, Investigator in charge of the branch office of the Board in Chicago, Illinois.

In accordance with the policy of the Board, the Examiner at the opening of the hearing stated that any person who had any evidence, questions, or suggestions to present for consideration in the proceeding might submit them in writing to the Examiners. Pursuant to this announcement, 81 written questions were submitted to the Examiners by the audience and were asked of the witnesses during the hearing. Although the public hearing was indefinitely recessed on December 14 by the Presiding Examiner, the investigation of this accident continues and will not be closed until all possibility of further evidence has been foreclosed.