Dorchester Minerals Operating LP		Summary Page List of Leases

Year	Oil			Gas
	Production (bbls)	Wells	Cumulative (bbls)	Production (mcf)	Wells	Cumulative (mcf)
1957	-	-	0	-	11	20,388,355
1958	-	-	0	1,115,742	11	21,504,097
1959	-	-	0	1,581,443	11	23,085,540
1960	-	-	0	1,779,759	11	24,865,299
1961	-	-	0	1,631,473	11	26,496,772
1962	-	-	0	1,391,487	11	27,888,259
1963	-	-	0	1,782,828	11	29,671,087
1964	-	-	0	1,290,203	11	30,961,290
1965	-	-	0	1,420,630	11	32,381,920
1966	-	-	0	1,161,264	11	33,543,184
1967	-	-	0	1,314,807	11	34,857,991
1968	-	-	0	1,659,450	11	36,517,441
1969	-	-	0	1,397,385	11	37,914,826
1970	-	-	0	1,101,684	11	39,016,510
1971	-	-	0	-	-	39,016,510
1972	-	-	0	-	-	39,016,510
1973	-	-	0	-	-	39,016,510
1974	-	-	0	-	-	39,016,510
1975	-	-	0	-	-	39,016,510
1976	-	-	0	-	-	39,016,510
1977	-	-	0	-	-	39,016,510
1978	-	-	0	-	-	39,016,510
1979	-	-	0	-	-	39,016,510
1980	-	-	0	-	-	39,016,510
1981	-	-	0	-	-	39,016,510
1982	-	-	0	-	-	39,016,510
1983	-	-	0	-	-	39,016,510
1984	-	-	0	-	-	39,016,510
1985	-	-	0	-	-	39,016,510
1986	-	-	0	-	-	39,016,510
1987	-	-	0	-	-	39,016,510
1988	-	-	0	-	-	39,016,510
1989	-	-	0	-	-	39,016,510
1990	-	-	0	-	-	39,016,510
1991	-	-	0	-	-	39,016,510
1992	-	-	0	-	-	39,016,510
1993	-	-	0	-	-	39,016,510
1994	-	-	0	-	-	39,016,510
1995	-	-	0	-	-	39,016,510
1996	-	-	0	-	-	39,016,510
1997	-	-	0	-	-	39,016,510
1998	-	-	0	-	-	39,016,510
1999	-	-	0	-	-	39,016,510
2000	-	-	0	-	-	39,016,510
2001	-	-	0	-	-	39,016,510
2002	-	-	0	-	-	39,016,510
2003	-	-	0	560,772	20	39,577,282
2004	-	-	0	764,270	20	40,341,552
2005	-	-	0	696,530	20	41,038,082
2006	-	-	0	635,857	20	41,673,939
2007	-	-	0	581,505	20	42,255,444
2008	-	-	0	548,095	20	42,803,539
2009	-	-	0	520,591	20	43,324,130
2010	-	-	0	470,502	20	43,794,632
2011	-	-	0	428,085	20	44,222,717
2012	-	-	0	404,448	20	44,627,165
2013	-	-	0	373,902	20	45,001,067
2014	-	-	0	312,373	20	45,313,440
2015	-	-	0	160,948	19	45,474,388
2016	-	-	0	324,258	18	45,798,646
2017	-	-	0	98,161	15	45,896,807

Updated through 5-2017.