Exhibit 99.1

Filed by Mainland Resources, Inc.
Pursuant to Rule 425 of the Securities Act of 1933, as amended
and deemed filed pursuant to
Rule 14a-12 of the Securities Exchange Act of 1934
Subject Company: American Exploration Corporation
Commission File Number: 000-52542

Houston, Texas / PR Newswire - Oct. 24, 2011 -Mainland Resources Inc., (the "Company") (MNLU-OTCBB, 5MN-Frankfurt) reports that Dr. George Chilingar joined its Advisory Board to assist the company with a strategic partnership alliance and the supporting financing effective immediately.

Dr. Chilingar states, "I am excited by the potential of Mainland's Buena Vista shale gas project in Mississippi. It is a significant prospect where I feel I can assist the Company both with strategic partnership affiliation, financing and a greater understanding of the long term development of this play."

President of Mainland Resources, Mike Newport states, "We are extremely pleased to have Dr. Chilingar join our Advisory Board to assist with a strategic partnership alliance. His world-class expertise lends tremendous credibility to our current Mississippi project and shows the calibre of talent that our Company is attracting. His insight and contribution will be greatly appreciated by our management."

Mainland and its working interest partners control in excess of 17,800 net acres or 28 sections on the Buena Vista prospect area where the Burkley-Phillips No. 1 well was drilled to 22,000 feet, cored and logged. Upon successful completion of its proposed merger with American Exploration, Mainland would own 92% of the 28 sections in the Buena Vista prospect. As recently announced, core analysis has determined that gas in place in the Buena Vista prospect could be up to 500 BCF/section based on the cored interval.

Mainland Resources, Inc. is engaged in the exploration of oil and gas resources. The Company's current initiatives are focused on the acquisition and development of acreage in emerging and early developing oil and gas regions with the potential for material discoveries. For information see: http://www.mainlandresources.com.

THIS NEWS RELEASE CONTAINS "FORWARD-LOOKING STATEMENTS," AS THAT TERM IS DEFINED IN SECTION 27A OF THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, AND SECTION 21E OF THE UNITED STATES SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. STATEMENTS IN THIS NEWS RELEASE, WHICH ARE NOT PURELY HISTORICAL, ARE FORWARD-LOOKING STATEMENTS AND INCLUDE ANY STATEMENTS REGARDING BELIEFS, PLANS, EXPECTATIONS OR INTENTIONS REGARDING THE FUTURE.

FORWARD-LOOKING STATEMENTS ARE SUBJECT TO CERTAIN RISKS AND UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM ANY FUTURE RESULTS, PERFORMANCE OR ACHIEVEMENTS EXPRESSED OR IMPLIED BY SUCH STATEMENTS. STATEMENTS THAT ARE NOT HISTORICAL FACTS, INCLUDING STATEMENTS THAT ARE PRECEDED BY, FOLLOWED BY, OR THAT INCLUDE SUCH WORDS AS "ESTIMATE," "ANTICIPATE," "BELIEVE," "PLAN" OR "EXPECT" OR SIMILAR STATEMENTS ARE FORWARD-LOOKING STATEMENTS. RISKS AND UNCERTAINTIES FOR THE COMPANY INCLUDE, BUT ARE NOT LIMITED TO, THE RISKS ASSOCIATED WITH OIL AND GAS PROPERTY EXPLORATION AND FUNDING AS WELL AS THE RISKS SHOWN IN THE COMPANY'S MOST RECENT ANNUAL REPORT ON FORM 10-K AND ITS QUARTERLY REPORTS ON FORM 10-Q, AND FROM TIME-TO-TIME IN OTHER PUBLICLY AVAILABLE INFORMATION REGARDING THE COMPANY. OTHER RISKS INCLUDE RISKS ASSOCIATED WITH THE REGULATORY APPROVAL PROCESS, COMPETITIVE COMPANIES, FUTURE CAPITAL REQUIREMENTS AND THE COMPANY'S ABILITY AND LEVEL OF SUPPORT FOR ITS EXPLORATION ACTIVITIES. THERE CAN BE NO ASSURANCE THAT THE COMPANY'S EXPLORATION EFFORTS WILL SUCCEED AND THE COMPANY WILL ULTIMATELY ACHIEVE COMMERCIAL SUCCESS. THESE FORWARD-LOOKING STATEMENTS ARE MADE AS OF THE DATE OF THIS NEWS RELEASE, AND THE COMPANY ASSUMES NO OBLIGATION TO UPDATE THE FORWARD-LOOKING STATEMENTS, OR TO UPDATE THE REASONS WHY ACTUAL RESULTS COULD DIFFER FROM THOSE PROJECTED IN THE FORWARD-LOOKING STATEMENTS. ALTHOUGH THE COMPANY BELIEVES THAT THE BELIEFS, PLANS, EXPECTATIONS AND INTENTIONS CONTAINED IN THIS NEWS RELEASE ARE REASONABLE, THERE CAN BE NO ASSURANCE THOSE BELIEFS, PLANS, EXPECTATIONS OR INTENTIONS WILL PROVE TO BE ACCURATE. INVESTORS SHOULD CONSIDER ALL OF THE INFORMATION SET FORTH HEREIN AND SHOULD ALSO REFER TO THE RISK FACTORS DISCLOSED IN THE COMPANY'S PERIODIC REPORTS FILED FROM TIME-TO-TIME WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION.

THE COMPANY AND AMERICAN EXPLORATION CORPORATION INTEND TO FILE CERTAIN MATERIALS WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION IN CONNECTION WITH THE PROPOSED MERGER TRANSACTION BETWEEN THE PARTIES ANNOUNCED ON MARCH 23, 2010, INCLUDING THE FILING BY THE COMPANY WITH THE SEC OF A REGISTRATION STATEMENT ON FORM S-4, WHICH WILL INCLUDE A PRELIMINARY PROSPECTUS AND RELATED MATERIALS TO REGISTER THE SECURITIES OF THE COMPANY TO BE ISSUED IN EXCHANGE FOR SECURITIES OF AMERICAN EXPLORATION. THE REGISTRATION STATEMENT WILL INCORPORATE A JOINT PROXY STATEMENT/ PROSPECTUS THAT THE COMPANY AND AMERICAN EXPLORATION PLAN TO FILE WITH THE SEC AND MAIL TO THEIR RESPECTIVE STOCKHOLDERS IN CONNECTION WITH OBTAINING STOCKHOLDER APPROVAL OF THE PROPOSED MERGER. THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS WILL CONTAIN IMPORTANT INFORMATION ABOUT THE COMPANY, AMERICAN EXPLORATION, THE MERGER AND RELATED MATTERS. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS CAREFULLY WHEN THEY ARE AVAILABLE. INVESTORS AND SECURITY HOLDERS WILL BE ABLE TO OBTAIN FREE COPIES OF THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS WHEN THEY BECOME AVAILABLE, AND OTHER DOCUMENTS FILED WITH THE SEC BY THE COMPANY AND AMERICAN EXPLORATION, THROUGH THE WEB SITE MAINTAINED BY THE SEC AT WWW.SEC.GOV. THE COMPANY'S SECURITY HOLDERS WILL ALSO RECEIVE INFORMATION AT AN APPROPRIATE TIME ON HOW TO OBTAIN THESE DOCUMENTS FREE OF CHARGE FROM THE COMPANY. IN ANY EVENT, DOCUMENTS FILED BY THE COMPANY WITH THE SEC MAY BE OBTAINED FREE OF CHARGE BY CONTACTING THE COMPANY AT: MAINLAND RESOURCES, INC.; ATTENTION: MR. WILLIAM THOMAS, CFO; 21 WATERWAY AVENUE, SUITE 300, THE WOODLANDS, TEXAS 77380; FACSIMILE: (713) 583-1162.