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Form SC 13G/A MITCHAM INDUSTRIES INC Filed by: WELLINGTON MANAGEMENT CO LLP

October 10, 2014 11:16 AM EDT
http://archive.fast-edgar.com/20141010/A922T2224222L2Z2222G22NZPQJBX2X2L262 Filed on: October 10, 2014


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Wellington Management, 13G