Major Portion Prices: 2000-2008

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Major Portion Prices and Due Dates

Major Portion Prices and Due Dates for Designated Areas Not Associated With An Index Zone - 2000-2008

Alabama/Coushatta

Alabama/Coushatta - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$		July	$4.51	02/28/2001
February	$		August	$4.04	02/28/2001
March	$		September	$4.81	07/02/2001
April	$2.95	07/02/2001	October	$5.48	07/02/2001
May	$3.13	01/02/2001	November	$4.71	07/02/2001
June	$4.52	01/02/2001	December	$6.83	07/02/2001
* Prices are in $/MMBtu

Alabama/Coushatta - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$10.49	07/31/2003	July	$3.52	07/31/2003
February	$6.62	07/31/2003	August	$3.39	07/31/2003
March	$5.40	07/31/2003	September	$2.54	07/31/2003
April	$5.68	07/31/2003	October	$2.32	07/31/2003
May	$5.19	07/31/2003	November	$3.26	07/31/2003
June	$4.17	07/31/2003	December	$2.53	07/31/2003
* Prices are in $/MMBtu

Blackfeet Reservation

Blackfeet Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.73	08/31/2000	July	$3.23	02/28/2001
February	$1.68	08/31/2000	August	$2.82	02/28/2001
March	$1.85	10/31/2000	September	$3.14	04/30/2001
April	$2.16	10/31/2000	October	$4.05	04/30/2001
May	$2.29	01/02/2001	November	$4.13	07/02/2001
June	$2.79	01/02/2001	December	$4.79	07/02/2001
* Prices are in $/MMBtu

Blackfeet Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.38	07/31/2003	July	$2.51	07/31/2003
February	$6.74	07/31/2003	August	$2.02	07/31/2003
March	$4.65	07/31/2003	September	$1.84	07/31/2003
April	$4.54	07/31/2003	October	$1.27	07/31/2003
May	$4.31	07/31/2003	November	$2.11	07/31/2003
June	$3.28	07/31/2003	December	$2.94	07/31/2003
* Prices are in $/MMBtu

Blackfeet Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.59	06/15/2004	July	$2.81	06/15/2004
February	$2.81	06/15/2004	August	$2.16	06/15/2004
March	$3.14	06/15/2004	September	$2.99	06/15/2004
April	$3.62	06/15/2004	October	$3.86	06/15/2004
May	$3.84	06/15/2004	November	$4.90	06/15/2004
June	$3.56	06/15/2004	December	$4.74	06/15/2004
* Prices are in $/MMBtu

Blackfeet Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.57	05/31/2005	July	$7.09	05/31/2005
February	$6.48	05/31/2005	August	$5.73	05/31/2005
March	$9.53	05/31/2005	September	$6.14	05/31/2005
April	$6.63	05/31/2005	October	$5.83	05/31/2005
May	$6.64	05/31/2005	November	$5.64	05/31/2005
June	$7.05	05/31/2005	December	$5.88	05/31/2005
* Prices are in $/MMBtu

Blackfeet Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.37	04/30/2006	July	$7.32	04/30/2006
February	$7.07	04/30/2006	August	$7.27	04/30/2006
March	$6.35	04/30/2006	September	$6.48	04/30/2006
April	$6.61	04/30/2006	October	$6.22	04/30/2006
May	$6.78	04/30/2006	November	$9.20	04/30/2006
June	$7.58	04/30/2006	December	$8.95	04/30/2006
* Prices are in $/MMBtu

Blackfeet Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.93	03/19/2007	July	$5.66	03/19/2007
February	$7.28	03/19/2007	August	$5.95	03/19/2007
March	$7.41	03/19/2007	September	$7.76	03/19/2007
April	$5.86	03/19/2007	October	$9.60	03/19/2007
May	$5.82	03/19/2007	November	$10.53	03/19/2007
June	$5.29	03/19/2007	December	$8.93	03/19/2007
* Prices are in $/MMBtu

Blackfeet Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$10.17	06/30/2008	July	$4.82	06/30/2008
February	$7.12	06/30/2008	August	$5.14	06/30/2008
March	$6.07	06/30/2008	September	$5.26	06/30/2008
April	$5.38	06/30/2008	October	$3.69	06/30/2008
May	$5.60	06/30/2008	November	$5.73	06/30/2008
June	$4.78	06/30/2008	December	$6.63	06/30/2008
* Prices are in $/MMBtu

Blackfeet Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.96	11/10/2009	July	$5.81	11/10/2009
February	$5.86	11/10/2009	August	$4.74	11/10/2009
March	$6.39	11/10/2009	September	$4.48	11/10/2009
April	$6.11	11/10/2009	October	$4.99	11/10/2009
May	$6.44	11/10/2009	November	$5.70	11/10/2009
June	$6.23	11/10/2009	December	$6.30	11/10/2009
* Prices are in $/MMBtu

Blackfeet Reservation - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.18	06/28/2010	July	$10.95	06/28/2010
February	$7.00	06/28/2010	August	$8.39	06/28/2010
March	$7.50	06/28/2010	September	$6.65	06/28/2010
April	$8.28	06/28/2010	October	$5.58	06/28/2010
May	$8.94	06/28/2010	November	$5.23	06/28/2010
June	$9.79	06/28/2010	December	$5.00	06/28/2010
* Prices are in $/MMBtu

Fort Belknap

Fort Belknap - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.72	08/31/2000	July	$4.27	02/28/2001
February	$3.81	08/31/2000	August	$4.13	02/28/2001
March	$3.89	10/31/2000	September	$4.33	04/30/2001
April	$3.97	10/31/2000	October	$4.68	04/30/2001
May	$3.92	01/02/2001	November	$4.52	07/02/2001
June	$4.14	01/02/2001	December	$5.33	07/02/2001
* Prices are in $/MMBtu

Fort Belknap - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.57	07/31/2003	July	$4.36	07/31/2003
February	$5.31	07/31/2003	August	$4.34	07/31/2003
March	$4.72	07/31/2003	September	$4.32	07/31/2003
April	$4.71	07/31/2003	October	$4.34	07/31/2003
May	$4.66	07/31/2003	November	$4.34	07/31/2003
June	$4.49	07/31/2003	December	$4.34	07/31/2003
* Prices are in $/MMBtu

Fort Belknap - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.38	06/15/2004	July	$4.38	06/15/2004
February	$4.30	06/15/2004	August	$4.32	06/15/2004
March	$4.33	06/15/2004	September	$4.42	06/15/2004
April	$4.50	06/15/2004	October	$4.52	06/15/2004
May	$4.53	06/15/2004	November	$4.74	06/15/2004
June	$4.44	06/15/2004	December	$4.75	06/15/2004
* Prices are in $/MMBtu

Fort Belknap - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.97	05/31/2005	July	$5.18	05/31/2005
February	$5.10	05/31/2005	August	$5.03	05/31/2005
March	$5.84	05/31/2005	September	$5.13	05/31/2005
April	$5.04	05/31/2005	October	$5.06	05/31/2005
May	$5.08	05/31/2005	November	$5.03	05/31/2005
June	$5.27	05/31/2005	December	$5.32	05/31/2005
* Prices are in $/MMBtu

Fort Belknap - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.42	04/30/2006	July	$5.56	04/30/2006
February	$5.32	04/30/2006	August	$5.42	04/30/2006
March	$5.25	04/30/2006	September	$5.37	04/30/2006
April	$5.25	04/30/2006	October	$5.56	04/30/2006
May	$5.35	04/30/2006	November	$5.67	04/30/2006
June	$5.55	04/30/2006	December	$5.74	04/30/2006
* Prices are in $/MMBtu

Fort Belknap - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.59	03/19/2007	July	$5.97	03/19/2007
February	$5.71	03/19/2007	August	$5.97	03/19/2007
March	$5.83	03/19/2007	September	$6.63	03/19/2007
April	$5.92	03/19/2007	October	$7.10	03/19/2007
May	$5.84	03/19/2007	November	$6.68	03/19/2007
June	$5.79	03/19/2007	December	$6.63	03/19/2007
* Prices are in $/MMBtu

Fort Belknap - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.36	06/30/2008	July	$5.69	06/30/2008
February	$6.15	06/30/2008	August	$6.11	06/30/2008
March	$5.95	06/30/2008	September	$5.79	06/30/2008
April	$5.99	06/30/2008	October	$5.78	06/30/2008
May	$5.91	06/30/2008	November	$6.20	06/30/2008
June	$5.86	06/30/2008	December	$6.13	06/30/2008
* Prices are in $/MMBtu

Fort Belknap - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.01	11/10/2009	July	$5.97	11/10/2009
February	$6.42	11/10/2009	August	$5.96	11/10/2009
March	$6.24	11/10/2009	September	$5.83	11/10/2009
April	$6.17	11/10/2009	October	$5.84	11/10/2009
May	$6.22	11/10/2009	November	$6.00	11/10/2009
June	$6.28	11/10/2009	December	$6.27	11/10/2009
* Prices are in $/MMBtu

Fort Belknap - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.40	06/28/2010	July	$7.54	06/28/2010
February	$6.65	06/28/2010	August	$7.54	06/28/2010
March	$6.87	06/28/2010	September	$2.63	06/28/2010
April	$6.97	06/28/2010	October	$6.18	06/28/2010
May	$7.20	06/28/2010	November	$6.13	06/28/2010
June	$7.54	06/28/2010	December	$5.99	06/28/2010
* Prices are in $/MMBtu

Fort Berthold

Fort Berthold - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$0.87	08/31/2000	July	$2.15	02/28/2001
February	$1.00	08/31/2000	August	$1.70	02/28/2001
March	$0.98	10/31/2000	September	$2.13	04/30/2001
April	$1.17	10/31/2000	October	$2.60	04/30/2001
May	$1.25	01/02/2001	November	$2.18	07/02/2001
June	$2.03	01/02/2001	December	$3.09	07/02/2001
* Prices are in $/MMBtu

Fort Berthold - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.48	07/31/2003	July	$1.17	07/31/2003
February	$3.07	07/31/2003	August	$1.27	07/31/2003
March	$2.81	07/31/2003	September	$0.79	07/31/2003
April	$2.61	07/31/2003	October	$0.98	07/31/2003
May	$1.94	07/31/2003	November	$1.17	07/31/2003
June	$1.70	07/31/2003	December	$0.88	07/31/2003
* Prices are in $/MMBtu

Fort Berthold - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.32	06/15/2004	July	$1.87	06/15/2004
February	$1.18	06/15/2004	August	$1.92	06/15/2004
March	$2.01	06/15/2004	September	$2.90	06/15/2004
April	$2.61	06/15/2004	October	$3.18	06/15/2004
May	$2.69	06/15/2004	November	$3.33	06/15/2004
June	$2.36	06/15/2004	December	$3.70	06/15/2004
* Prices are in $/MMBtu

Fort Berthold - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.32	05/31/2005	July	$4.22	05/31/2005
February	$5.88	05/31/2005	August	$4.25	05/31/2005
March	$6.31	05/31/2005	September	$3.93	05/31/2005
April	$4.28	05/31/2005	October	$4.10	05/31/2005
May	$4.76	05/31/2005	November	$4.05	05/31/2005
June	$4.83	05/31/2005	December	$5.03	05/31/2005
* Prices are in $/MMBtu

Fort Berthold - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.32	04/30/2006	July	$5.22	04/30/2006
February	$4.70	04/30/2006	August	$6.35	04/30/2006
March	$4.56	04/30/2006	September	$4.14	04/30/2006
April	$5.12	04/30/2006	October	$4.94	04/30/2006
May	$5.83	04/30/2006	November	$8.00	04/30/2006
June	$5.80	04/30/2006	December	$5.67	04/30/2006
* Prices are in $/MMBtu

Fort Berthold - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.08	03/19/2007	July	$6.80	03/19/2007
February	$5.00	03/19/2007	August	$7.60	03/19/2007
March	$5.60	03/19/2007	September	$9.93	03/19/2007
April	$5.98	03/19/2007	October	$11.22	03/19/2007
May	$5.58	03/19/2007	November	$8.45	03/19/2007
June	$5.46	03/19/2007	December	$11.26	03/19/2007
* Prices are in $/MMBtu

Fort Berthold - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.45	06/30/2008	July	$5.23	06/30/2008
February	$6.44	06/30/2008	August	$5.87	06/30/2008
March	$5.37	06/30/2008	September	$4.56	06/30/2008
April	$5.47	06/30/2008	October	$4.88	06/30/2008
May	$5.05	06/30/2008	November	$6.62	06/30/2008
June	$5.15	06/30/2008	December	$6.41	06/30/2008
* Prices are in $/MMBtu

Fort Berthold - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.93	11/10/2009	July	$5.51	11/10/2009
February	$7.35	11/10/2009	August	$5.48	11/10/2009
March	$6.16	11/10/2009	September	$5.94	11/10/2009
April	$6.66	11/10/2009	October	$6.64	11/10/2009
May	$6.81	11/10/2009	November	$7.07	11/10/2009
June	$6.47	11/10/2009	December	$6.75	11/10/2009
* Prices are in $/MMBtu

Fort Berthold - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.28	06/28/2010	July	$10.36	06/28/2010
February	$7.84	06/28/2010	August	$7.63	06/28/2010
March	$8.76	06/28/2010	September	$6.19	06/28/2010
April	$9.48	06/28/2010	October	$5.92	06/28/2010
May	$10.69	06/28/2010	November	$5.69	06/28/2010
June	$11.62	06/28/2010	December	$5.54	06/28/2010
* Prices are in $/MMBtu

Fort Peck Reservation

Fort Peck Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.47	08/31/2000	July	$2.69	02/28/2001
February	$1.67	08/31/2000	August	$2.31	02/28/2001
March	$1.66	10/31/2000	September	$2.78	04/30/2001
April	$1.83	10/31/2000	October	$3.34	04/30/2001
May	$1.95	01/02/2001	November	$3.12	07/02/2001
June	$2.72	01/02/2001	December	$4.29	07/02/2001
* Prices are in $/MMBtu

Fort Peck Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.30	07/31/2003	July	$1.81	07/31/2003
February	$4.98	07/31/2003	August	$2.02	07/31/2003
March	$3.89	07/31/2003	September	$1.62	07/31/2003
April	$3.98	07/31/2003	October	$1.10	07/31/2003
May	$3.30	07/31/2003	November	$2.47	07/31/2003
June	$2.48	07/31/2003	December	$1.94	07/31/2003
* Prices are in $/MMBtu

Fort Peck Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.14	06/15/2004	July	$2.17	06/15/2004
February	$1.62	06/15/2004	August	$1.74	06/15/2004
March	$2.01	06/15/2004	September	$2.04	06/15/2004
April	$2.90	06/15/2004	October	$2.92	06/15/2004
May	$2.62	06/15/2004	November	$2.92	06/15/2004
June	$2.33	06/15/2004	December	$3.55	06/15/2004
* Prices are in $/MMBtu

Fort Peck Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.55	05/31/2005	July	$4.69	05/31/2005
February	$5.25	05/31/2005	August	$4.71	05/31/2005
March	$7.96	05/31/2005	September	$4.47	05/31/2005
April	$4.43	05/31/2005	October	$4.10	05/31/2005
May	$4.29	05/31/2005	November	$4.15	05/31/2005
June	$4.97	05/31/2005	December	$4.90	05/31/2005
* Prices are in $/MMBtu

Fort Peck Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.83	04/30/2006	July	$5.59	04/30/2006
February	$5.43	04/30/2006	August	$5.91	04/30/2006
March	$4.75	04/30/2006	September	$5.35	04/30/2006
April	$4.87	04/30/2006	October	$6.91	04/30/2006
May	$5.02	04/30/2006	November	$7.61	04/30/2006
June	$5.67	04/30/2006	December	$7.09	04/30/2006
* Prices are in $/MMBtu

Fort Peck Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.30	03/19/2007	July	$7.41	03/19/2007
February	$6.21	03/19/2007	August	$7.90	03/19/2007
March	$6.70	03/19/2007	September	$9.26	03/19/2007
April	$7.05	03/19/2007	October	$10.61	03/19/2007
May	$6.60	03/19/2007	November	$12.33	03/19/2007
June	$6.52	03/19/2007	December	$9.75	03/19/2007
* Prices are in $/MMBtu

Fort Peck Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$9.89	06/30/2008	July	$6.70	06/30/2008
February	$7.96	06/30/2008	August	$7.07	06/30/2008
March	$7.57	06/30/2008	September	$5.91	06/30/2008
April	$6.07	06/30/2008	October	$4.72	06/30/2008
May	$6.97	06/30/2008	November	$6.72	06/30/2008
June	$6.35	06/30/2008	December	$7.89	06/30/2008
* Prices are in $/MMBtu

Fort Peck Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$6.64	11/10/2009	July	$6.48	11/10/2009
February	$8.92	11/10/2009	August	$7.12	11/10/2009
March	$9.47	11/10/2009	September	$6.74	11/10/2009
April	$9.19	11/10/2009	October	$7.69	11/10/2009
May	$7.28	11/10/2009	November	$8.80	11/10/2009
June	$7.12	11/10/2009	December	$9.85	11/10/2009
* Prices are in $/MMBtu

Fort Peck Reservation - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$9.05	06/28/2010	July	$13.35	06/28/2010
February	$9.72	06/28/2010	August	$10.31	06/28/2010
March	$10.41	06/28/2010	September	$8.94	06/28/2010
April	$10.94	06/28/2010	October	$7.21	06/28/2010
May	$12.21	06/28/2010	November	$6.15	06/28/2010
June	$12.25	06/28/2010	December	$5.46	06/28/2010
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation

Navajo Allotted Leases in the Navajo Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.20	08/31/2000	July	$3.80	02/28/2001
February	$2.45	08/31/2000	August	$3.42	02/28/2001
March	$2.39	10/31/2000	September	$3.53	04/30/2001
April	$2.73	10/31/2000	October	$4.53	04/30/2001
May	$2.78	01/02/2001	November	$4.51	07/02/2001
June	$3.87	01/02/2001	December	$6.34	07/02/2001
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.63	07/31/2003	July	$2.33	07/31/2003
February	$6.06	07/31/2003	August	$2.36	07/31/2003
March	$4.84	07/31/2003	September	$2.18	07/31/2003
April	$4.65	07/31/2003	October	$1.46	07/31/2003
May	$4.23	07/31/2003	November	$2.61	07/31/2003
June	$3.21	07/31/2003	December	$2.09	07/31/2003
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.39	06/15/2004	July	$2.49	06/15/2004
February	$1.69	06/15/2004	August	$2.45	06/15/2004
March	$2.05	06/15/2004	September	$2.27	06/15/2004
April	$2.90	06/15/2004	October	$2.32	06/15/2004
May	$2.43	06/15/2004	November	$3.27	06/15/2004
June	$2.02	06/15/2004	December	$3.56	06/15/2004
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.37	05/31/2005	July	$4.66	05/31/2005
February	$4.50	05/31/2005	August	$3.87	05/31/2005
March	$5.82	05/31/2005	September	$4.31	05/31/2005
April	$3.65	05/31/2005	October	$3.88	05/31/2005
May	$4.02	05/31/2005	November	$3.79	05/31/2005
June	$4.88	05/31/2005	December	$4.23	05/31/2005
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.04	04/30/2006	July	$5.22	04/30/2006
February	$4.80	04/30/2006	August	$5.18	04/30/2006
March	$4.27	04/30/2006	September	$4.47	04/30/2006
April	$4.38	04/30/2006	October	$4.54	04/30/2006
May	$4.92	04/30/2006	November	$6.47	04/30/2006
June	$5.41	04/30/2006	December	$5.73	04/30/2006
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.46	03/19/2007	July	$6.00	03/19/2007
February	$5.31	03/19/2007	August	$6.31	03/19/2007
March	$5.35	03/19/2007	September	$8.13	03/19/2007
April	$6.09	03/19/2007	October	$9.40	03/19/2007
May	$6.06	03/19/2007	November	$10.26	03/19/2007
June	$5.36	03/19/2007	December	$8.52	03/19/2007
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$10.03	06/30/2008	July	$5.59	06/30/2008
February	$7.24	06/30/2008	August	$6.49	06/30/2008
March	$6.57	06/30/2008	September	$6.62	06/30/2008
April	$6.03	06/30/2008	October	$4.20	06/30/2008
May	$6.22	06/30/2008	November	$6.58	06/30/2008
June	$5.22	06/30/2008	December	$6.71	06/30/2008
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.87	11/10/2009	July	$6.03	11/10/2009
February	$6.84	11/10/2009	August	$5.49	11/10/2009
March	$6.77	11/10/2009	September	$4.88	11/10/2009
April	$6.20	11/10/2009	October	$5.59	11/10/2009
May	$6.69	11/10/2009	November	$6.18	11/10/2009
June	$6.81	11/10/2009	December	$6.79	11/10/2009
* Prices are in $/MMBtu

Navajo Allotted Leases in the Navajo Reservation - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.04	06/28/2010	July	$11.49	06/28/2010
February	$7.74	06/28/2010	August	$7.82	06/28/2010
March	$8.35	06/28/2010	September	$6.27	06/28/2010
April	$8.77	06/28/2010	October	$4.50	06/28/2010
May	$9.54	06/28/2010	November	$3.44	06/28/2010
June	$10.40	06/28/2010	December	$5.09	06/28/2010
* Prices are in $/MMBtu

Rocky Boys Reservation

Rocky Boys Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.64	08/31/2000	July	$3.02	02/28/2001
February	$1.84	08/31/2000	August	$2.56	02/28/2001
March	$1.34	10/31/2000	September	$3.52	04/30/2001
April	$1.92	10/31/2000	October	$4.01	04/30/2001
May	$2.04	01/02/2001	November	$3.86	07/02/2001
June	$3.09	01/02/2001	December	$5.58	07/02/2001
* Prices are in $/MMBtu

Rocky Boys Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.25	07/31/2003	July	$2.35	07/31/2003
February	$5.66	07/31/2003	August	$2.18	07/31/2003
March	$4.27	07/31/2003	September	$1.48	07/31/2003
April	$4.38	07/31/2003	October	$0.98	07/31/2003
May	$3.74	07/31/2003	November	$2.32	07/31/2003
June	$2.94	07/31/2003	December	$1.60	07/31/2003
* Prices are in $/MMBtu

Rocky Boys Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.84	06/15/2004	July	$2.20	06/15/2004
February	$1.28	06/15/2004	August	$1.90	06/15/2004
March	$1.64	06/15/2004	September	$2.22	06/15/2004
April	$2.44	06/15/2004	October	$2.62	06/15/2004
May	$2.31	06/15/2004	November	$3.00	06/15/2004
June	$2.37	06/15/2004	December	$3.21	06/15/2004
* Prices are in $/MMBtu

Rocky Boys Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.75	05/31/2005	July	$4.04	05/31/2005
February	$4.65	05/31/2005	August	$3.62	05/31/2005
March	$6.76	05/31/2005	September	$3.76	05/31/2005
April	$4.04	05/31/2005	October	$3.44	05/31/2005
May	$4.16	05/31/2005	November	$3.38	05/31/2005
June	$4.57	05/31/2005	December	$3.94	05/31/2005
* Prices are in $/MMBtu

Rocky Boys Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.19	04/30/2006	July	$4.41	04/30/2006
February	$3.93	04/30/2006	August	$4.18	04/30/2006
March	$4.08	04/30/2006	September	$3.66	04/30/2006
April	$4.24	04/30/2006	October	$4.54	04/30/2006
May	$4.55	04/30/2006	November	$4.62	04/30/2006
June	$4.55	04/30/2006	December	$4.86	04/30/2006
* Prices are in $/MMBtu

Rocky Boys Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.56	03/19/2007	July	$5.27	03/19/2007
February	$4.58	03/19/2007	August	$6.72	03/19/2007
March	$5.36	03/19/2007	September	$8.42	03/19/2007
April	$5.50	03/19/2007	October	$9.46	03/19/2007
May	$4.77	03/19/2007	November	$7.46	03/19/2007
June	$5.19	03/19/2007	December	$9.34	03/19/2007
* Prices are in $/MMBtu

Rocky Boys Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$7.05	06/30/2008	July	$4.22	06/30/2008
February	$5.66	06/30/2008	August	$4.85	06/30/2008
March	$5.01	06/30/2008	September	$3.40	06/30/2008
April	$4.74	06/30/2008	October	$4.27	06/30/2008
May	$4.17	06/30/2008	November	$5.67	06/30/2008
June	$4.27	06/30/2008	December	$5.23	06/30/2008
* Prices are in $/MMBtu

Rocky Boys Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.87	11/10/2009	July	$4.12	11/10/2009
February	$5.38	11/10/2009	August	$3.76	11/10/2009
March	$5.30	11/10/2009	September	$3.89	11/10/2009
April	$5.22	11/10/2009	October	$4.90	11/10/2009
May	$5.35	11/10/2009	November	$5.22	11/10/2009
June	$4.92	11/10/2009	December	$5.13	11/10/2009
* Prices are in $/MMBtu

Rocky Boys Reservation - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.81	06/28/2010	July	$7.95	06/28/2010
February	$6.38	06/28/2010	August	$5.70	06/28/2010
March	$7.00	06/28/2010	September	$4.66	06/28/2010
April	$7.41	06/28/2010	October	$4.41	06/28/2010
May	$8.18	06/28/2010	November	$4.13	06/28/2010
June	$9.28	06/28/2010	December	$3.91	06/28/2010
* Prices are in $/MMBtu

Turtle Mountain Reservation

Turtle Mountain Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.27	08/31/2000	July	$1.18	02/28/2001
February	$1.27	08/31/2000	August	$1.18	02/28/2001
March	$1.27	10/31/2000	September	$1.18	04/30/2001
April	$1.18	10/31/2000	October	$1.18	04/30/2001
May	$1.18	01/02/2001	November	$1.27	07/02/2001
June	$1.18	01/02/2001	December	$1.44	07/02/2001
* Prices are in $/MMBtu

Turtle Mountain Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.24	07/31/2003	July	$1.48	07/31/2003
February	$1.94	07/31/2003	August	$1.48	07/31/2003
March	$1.52	07/31/2003	September	$1.47	07/31/2003
April	$1.56	07/31/2003	October	$1.47	07/31/2003
May	$1.47	07/31/2003	November	$1.47	07/31/2003
June	$1.47	07/31/2003	December	$1.47	07/31/2003
* Prices are in $/MMBtu

Turtle Mountain Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$1.47	06/15/2004	July	$2.02	06/15/2004
February	$1.47	06/15/2004	August	$1.37	06/15/2004
March	$1.47	06/15/2004	September	$1.37	06/15/2004
April	$1.37	06/15/2004	October	$1.37	06/15/2004
May	$1.37	06/15/2004	November	$1.39	06/15/2004
June	$2.03	06/15/2004	December	$1.39	06/15/2004
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation

Ute Allotted Leases in the Uintah & Ouray Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.18	08/31/2000	July	$3.86	02/28/2001
February	$2.38	08/31/2000	August	$3.15	02/28/2001
March	$2.40	10/31/2000	September	$3.72	04/30/2001
April	$2.67	10/31/2000	October	$4.64	04/30/2001
May	$2.80	01/02/2001	November	$4.43	07/02/2001
June	$3.76	01/02/2001	December	$5.80	07/02/2001
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$9.40	07/31/2003	July	$1.71	07/31/2003
February	$6.86	07/31/2003	August	$1.93	07/31/2003
March	$5.10	07/31/2003	September	$1.77	07/31/2003
April	$4.49	07/31/2003	October	$0.90	07/31/2003
May	$3.92	07/31/2003	November	$2.32	07/31/2003
June	$2.45	07/31/2003	December	$1.90	07/31/2003
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.08	06/15/2004	July	$1.81	06/15/2004
February	$1.49	06/15/2004	August	$1.76	06/15/2004
March	$1.73	06/15/2004	September	$1.68	06/15/2004
April	$2.62	06/15/2004	October	$1.84	06/15/2004
May	$2.03	06/15/2004	November	$2.85	06/15/2004
June	$1.83	06/15/2004	December	$3.14	06/15/2004
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.90	05/31/2005	July	$4.60	05/31/2005
February	$3.21	05/31/2005	August	$4.11	05/31/2005
March	$5.05	05/31/2005	September	$4.24	05/31/2005
April	$3.19	05/31/2005	October	$4.11	05/31/2005
May	$4.04	05/31/2005	November	$3.77	05/31/2005
June	$4.42	05/31/2005	December	$4.10	05/31/2005
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$4.39	04/30/2006	July	$5.09	04/30/2006
February	$4.65	04/30/2006	August	$4.87	04/30/2006
March	$4.19	04/30/2006	September	$4.25	04/30/2006
April	$4.15	04/30/2006	October	$4.40	04/30/2006
May	$4.82	04/30/2006	November	$6.32	04/30/2006
June	$5.13	04/30/2006	December	$5.81	04/30/2006
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.58	03/19/2007	July	$5.80	03/19/2007
February	$5.13	03/19/2007	August	$6.22	03/19/2007
March	$5.21	03/19/2007	September	$8.07	03/19/2007
April	$6.09	03/19/2007	October	$9.42	03/19/2007
May	$6.00	03/19/2007	November	$9.70	03/19/2007
June	$5.28	03/19/2007	December	$8.04	03/19/2007
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.61	06/30/2008	July	$4.64	06/30/2008
February	$6.59	06/30/2008	August	$5.31	06/30/2008
March	$6.40	06/30/2008	September	$4.65	06/30/2008
April	$5.95	06/30/2008	October	$2.80	06/30/2008
May	$5.49	06/30/2008	November	$5.57	06/30/2008
June	$4.92	06/30/2008	December	$5.28	06/30/2008
* Prices are in $/MMBtu

Ute Allotted Leases in the Uintah & Ouray Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.98	11/10/2009	July	$	11/10/2009
February	$6.29	11/10/2009	August	$	11/10/2009
March	$6.33	11/10/2009	September	$	11/10/2009
April	$3.72	11/10/2009	October	$	11/10/2009
May	$	11/10/2009	November	$	11/10/2009
June	$	11/10/2009	December	$	11/10/2009
* Prices are in $/MMBtu

As of May 1, 2007, the Ute Allotted leases in the Uintah and Ouray Reservation will be valued for royalty purposes based on the Central Rocky Mountain Index Zone price.

Ute Tribal Leases in the Uintah & Ouray Reservation

Ute Tribal Leases in the Uintah & Ouray Reservation - 2000

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.18	08/31/2000	July	$3.86	02/28/2001
February	$2.38	08/31/2000	August	$3.15	02/28/2001
March	$2.40	10/31/2000	September	$3.72	04/30/2001
April	$2.67	10/31/2000	October	$4.64	04/30/2001
May	$2.80	01/02/2001	November	$4.42	07/02/2001
June	$3.76	01/02/2001	December	$5.09	07/02/2001
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2001

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$9.44	07/31/2003	July	$2.62	07/31/2003
February	$6.86	07/31/2003	August	$2.66	07/31/2003
March	$4.78	07/31/2003	September	$2.10	07/31/2003
April	$4.44	07/31/2003	October	$0.84	07/31/2003
May	$4.07	07/31/2003	November	$2.30	07/31/2003
June	$2.81	07/31/2003	December	$1.78	07/31/2003
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2002

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$2.04	06/15/2004	July	$1.94	06/15/2004
February	$1.63	06/15/2004	August	$1.90	06/15/2004
March	$1.87	06/15/2004	September	$1.87	06/15/2004
April	$2.67	06/15/2004	October	$2.00	06/15/2004
May	$2.09	06/15/2004	November	$2.78	06/15/2004
June	$1.83	06/15/2004	December	$3.29	06/15/2004
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2003

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.20	05/31/2005	July	$4.24	05/31/2005
February	$3.68	05/31/2005	August	$3.94	05/31/2005
March	$6.47	05/31/2005	September	$4.05	05/31/2005
April	$3.51	05/31/2005	October	$3.84	05/31/2005
May	$4.39	05/31/2005	November	$3.63	05/31/2005
June	$4.83	05/31/2005	December	$4.24	05/31/2005
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2004

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.06	04/30/2006	July	$4.97	04/30/2006
February	$4.74	04/30/2006	August	$4.89	04/30/2006
March	$4.28	04/30/2006	September	$4.37	04/30/2006
April	$4.11	04/30/2006	October	$4.46	04/30/2006
May	$4.91	04/30/2006	November	$6.57	04/30/2006
June	$5.24	04/30/2006	December	$6.03	04/30/2006
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2005

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.54	03/19/2007	July	$5.71	03/19/2007
February	$5.09	03/19/2007	August	$5.97	03/19/2007
March	$5.45	03/19/2007	September	$7.99	03/19/2007
April	$5.71	03/19/2007	October	$9.37	03/19/2007
May	$5.77	03/19/2007	November	$9.75	03/19/2007
June	$5.28	03/19/2007	December	$8.71	03/19/2007
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2006

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$8.66	06/30/2008	July	$4.43	06/30/2008
February	$6.45	06/30/2008	August	$5.21	06/30/2008
March	$5.54	06/30/2008	September	$4.08	06/30/2008
April	$5.07	06/30/2008	October	$2.30	06/30/2008
May	$4.99	06/30/2008	November	$5.65	06/30/2008
June	$4.19	06/30/2008	December	$5.39	06/30/2008
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2007

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$3.39	11/10/2009	July	$2.89	11/10/2009
February	$5.83	11/10/2009	August	$2.62	11/10/2009
March	$5.76	11/10/2009	September	$1.87	11/10/2009
April	$2.80	11/10/2009	October	$1.17	11/10/2009
May	$4.32	11/10/2009	November	$3.43	11/10/2009
June	$2.63	11/10/2009	December	$5.59	11/10/2009
* Prices are in $/MMBtu

Ute Tribal Leases in the Uintah & Ouray Reservation - 2008

Month	Prices*	Due Dates	Month	Prices*	Due Dates
January	$5.74	06/28/2010	July	$8.72	06/28/2010
February	$6.80	06/28/2010	August	$6.57	06/28/2010
March	$7.46	06/28/2010	September	$1.53	06/28/2010
April	$7.66	06/28/2010	October	$2.98	06/28/2010
May	$8.53	06/28/2010	November	$2.50	06/28/2010
June	$8.46	06/28/2010	December	$4.33	06/28/2010
* Prices are in $/MMBtu