12. Major Clients

The Company operates in only one business segment, contract seismic data acquisition and processing services. The major clients in fiscal 2013, 2012 and 2011 have varied. Sales to these clients, as a percentage of operating revenues that exceeded 10%, were as follows:


	2013			2012			2011
A		19	%		—			—
B		17	%		—			24	%
C		—			21	%		27	%