In his 1981 Presidential Address, Kevin Barry cited figures that remain, a quarter century later, stunning: 744 seismic crews were active in the United States alone, estimated worldwide spending on geophysical surveys increased by 46% between 1979 and 1980, and was expected to grow by another 25% (to US$4 billion) in 1981, and SEG's revenues for 1981 were US$3.5 million (eight times more than a decade earlier).

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