Condensed Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 589,334	$ 750,947
United States Treasury securities	4,033,859	5,108,307
Royalties receivable	6,730,314	7,912,289
Prepaid expenses	72,641	2,110
TOTAL CURRENT ASSETS	11,426,148	13,773,653
NONCURRENT ASSETS
United States Treasury securities	4,862,481	4,759,072
PROPERTIES
Mineral and surface lands	39,479,708	39,479,708
Less: Allowances for accumulated depletion and amortization	(37,375,777)	(37,201,777)
Subtotal	2,103,931	2,277,931
Building and equipment	316,816	316,816
Less: Allowances for accumulated depreciation	(221,020)	(212,560)
Subtotal	95,796	104,256
TOTAL PROPERTIES	2,199,727	2,382,187
TOTAL ASSETS	18,488,356	20,914,912
LIABILITIES AND BENEFICIARIES' EQUITY
Accounts payable and accrued expenses	185,622	128,856
Distributions	3,375,000	8,625,000
TOTAL CURRENT LIABILITIES	3,560,622	8,753,856
NONCURRENT LIABILITIES
Deferred compensation	209,600	209,600
Liability for pension benefits	1,687,245	1,642,113
TOTAL NONCURRENT LIABILITIES	1,896,845	1,851,713
TOTAL LIABILITIES	5,457,467	10,605,569
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	15,346,421	12,752,340
Accumulated other comprehensive loss	(2,315,532)	(2,442,997)
TOTAL BENEFICIARIES' EQUITY	13,030,889	10,309,343
TOTAL LIABILITIES AND BENEFICIARIES' EQUITY	$ 18,488,356	$ 20,914,912