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U.S. Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  2000's 615 717 624 481 563 655 728 848 NA 787
  2010's 774


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.