Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (Unaudited) (Parentheticals)

v2.4.0.6
Balance Sheets (Unaudited) (Parentheticals) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2012
acre
Dec. 31, 2011
acre
Land in Acres 10,125 10,125
Surface rights in acres 913,190 918,650
Certificates of Proprietary Interest, par value (in Dollars per share) 100 100
Certificates of Proprietary Interest, outstanding (in Shares) 0 0
Sub-share Certificates in Certificates of Proprietary Interest, par value (in Dollars per share) 0.03 0.03
Sub-share Certificates in Certificates of Proprietary Interest, outstanding (in Shares) 9,065,994 9,175,414
Land Surface Rights [Member]
   
Number of Lots 318 318
Royalty Interests In Acres 1_16 [Member]
   
nonparticipating perpetual royalty interest in acres 373,777 373,777
Royalty Interests In Acres 1_128 [Member]
   
nonparticipating perpetual royalty interest in acres 85,414 85,414