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Major Clients
 12 Months Ended
Sep. 30, 2014
Major Clients
13. Major Clients

The Company operates in only one business segment, contract seismic data acquisition and processing services. The major clients in fiscal 2014, 2013 and 2012 have varied. Sales to these clients, as a percentage of operating revenues that exceeded 10%, were as follows:

 

     2014     2013     2012  

A

      16 %      19 %      —     

B

      13 %      17 %      —     

C

      12 %      —          —     

D

      —          —          21 %