********************************************************************** Roy C. Johnston 12 March 2011 ********************************************************************** Dr. Roy C. Johnston died in Lake Charles, Louisiana, on March 12, 2011. Dr. Johnston was an employee of TI from the 60's to 1981. He held 12 patents on sources used in seismic exploration. Dr. Johnston was Professor of Mechanical Engineering at McNeese State University from 1990 until his retirement in 2007. Therrill Valentine ********************************************************************** Thanks, Therrill,for sending the details about the death of Dr. Roy C. Johnston. I am very sorry to hear that Roy died. His name was in the In Memoriam list in the April TI Alumni eNews. I enjoyed working with Roy in the GSI Engineering Department. I recall being the technical editor for Roy on an air gun paper that Roy presented to the European Association of Exploration Geophysicists. The EAEG required using metric measurements in papers, so all the numbers had to be converted. I had returned to GSI after working in the Consumer Relations Department for the TI Calculator Division during one of GSI's economic downturns. I had a SR-51 calculator that easily converted from feet to meters so this was a big help in getting the editing job done. Another thing I remember about Roy was his going on sea tests on GSI ships to check out new air gun equipment. GSI ships were most likely to be available to the Engineering Department in mid-winter when the seas were rough and the vessels were not under contract to clients. The Dallas engineers were not accustomed to being at sea, and sailing under those conditions was especially uncomfortable for engineers like Roy who was subject to seasickness. Roy was a fine man, who made many professional contributions. Best regards, Dot Adler