UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	May 20, 2015

Accession Number:	0001193125-15-190441
Submission Type:	POS AM
CIK: 0001071993 Company Name: CONTANGO OIL & GAS CO File Number: 333-193613
CIK: 0001596470 Company Name: CONTANGO MINING Co File Number: 333-193613-09
CIK: 0001596376 Company Name: CONTERRA CO File Number: 333-193613-08
CIK: 0001596378 Company Name: CONTARO CO File Number: 333-193613-07
CIK: 0001596239 Company Name: CONTANGO ALTA INVESTMENTS, INC. File Number: 333-193613-06
CIK: 0001596386 Company Name: CONTANGO VENTURE CAPITAL CORP File Number: 333-193613-05
CIK: 0000813779 Company Name: CRIMSON EXPLORATION INC. File Number: 333-193613-04
CIK: 0001550972 Company Name: CRIMSON EXPLORATION OPERATING, INC. File Number: 333-193613-03
CIK: 0001436080 Company Name: Contango Energy CO File Number: 333-193613-02
CIK: 0001596374 Company Name: CONTANGO OPERATORS, INC File Number: 333-193613-01