Condensed Balance Sheets (USD $)	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 941,436	$ 668,310
United States Treasury securities	4,391,602	5,013,272
Royalties receivable	6,200,432	6,041,224
Prepaid expenses	29,417	4,519
TOTAL CURRENT ASSETS	11,562,887	11,727,325
NONCURRENT ASSETS
United States Treasury securities	5,472,203	3,025,924
PROPERTIES
Mineral and surface lands	39,479,708	39,127,058
Less: Allowances for accumulated depletion and amortization	(37,055,077)	(36,614,977)
subtotal	2,424,631	2,512,081
Building and equipment	316,816	313,831
Less: Allowances for accumulated depreciation	(204,100)	(196,069)
subtotal	112,716	117,762
TOTAL PROPERTIES	2,537,347	2,629,843
TOTAL ASSETS	19,572,437	17,383,092
LIABILITIES AND BENEFICIARIES' EQUITY
Accounts payable and accrued expenses	180,856	111,556
Distributions	6,000,000	5,625,000
TOTAL CURRENT LIABILITIES	6,180,856	5,736,556
NONCURRENT LIABILITIES
Deferred compensation	181,500	181,500
Liability for pension benefits	922,627	1,349,314
TOTAL NONCURRENT LIABILITIES	1,104,127	1,530,814
TOTAL LIABILITIES	7,284,983	7,267,370
BENEFICIARIES' EQUITY, including certificate holders' equity, represented by 1,500,000 certificates (shares or units) of beneficial interest authorized and outstanding, and the reversionary interest	14,133,398	12,204,529
Accumulated other comprehensive loss	(1,845,944)	(2,088,807)
TOTAL BENEFICIARIES' EQUITY	12,287,454	10,115,722
TOTAL LIABILITIES AND BENEFICIARIES' EQUITY	$ 19,572,437	$ 17,383,092