Collection of Cores from Marathon Oil Company currently at W.M.U.
County	Operator/Well #	Permit #	Boxes	Footage
Arenac	Briggs 1-12	39889	35	10742-11215
Arenac	Seignious 1-10	40336	32	10610-10797
Branch	Rzepke  1-27	31253	20	3102-3115, 3125-3164
Branch	Stetler 1-33	31407	39	3087-3145, 3350-3395
Branch	Taylor 1-35	31348	47	3090-3412
Calhoun	Martin 2-A	22083	35	4100-4143, 4145-4146, 4148-4160, 4162-4163, 4165-4198
Calhoun	McMahon 4	22460	13	(4091-4170)
Gladwin	Ballentine 1-35	38836	37	11118-11778
Grand Traverse	State Blair 2-24	34292	52	7609-7740, 8112-8160, 8586-8618, 8671-8683, 8689-8750, 8894-8914, 9286-9320, 9736-9770
Hillsdale	Barnett  1	21796	8	3873-3884, 3887-3911, 3914-3926, 3929-3941, 3942-3956, 3959-3970
Hillsdale	Buehrer   1	21064	60	3610-3731, 3753-3964
Hillsdale	Fowler  3	21701	51	3911-4050
Hillsdale	Hale  1-21	31381	47	3205-3265, 3600-3635,
Hillsdale	Hamilton, Kenneth  1-21	31252	18	3210-3258
Hillsdale	Hergert  2	25297	26	(3892-4060)
Hillsdale	Kline and Russell  1-21	31295	52	(3220-3279, 3500-3559, 3585-3605)
Hillsdale	Mann  6	22381	26	3935-3960, 3966-4081
Hillsdale	Rowe  A-2	21381	125	3680-4029
Hillsdale	Rowe  L-2	21974	17	3790-3840
Hillsdale	Skinner 1	21833	10	3875-4000
Hillsdale	Warner-Fouty 9-8	41359	8	4216-4239
Hillsdale	Wooden 5	22243	72	3799-3898, 3900-4003
Jackson	Hall 1-13	36384	12	4307-4360
Macomb	Washington 6-17	53272	70	3198-3406
Newaygo	Baker 1-28	35311	8	7834-7891
Ogemaw	Knight 3-36	41089	6	3805-3832
Presque Isle	State Allis 1-29	31473	5	3704-3710, 3713-3745
St Joseph	Cupp  1-11	31335	67	1944-1963, 2855-2913, 2969-3003, 5006-5027, 5034-5078
Wayne	Brine Recovery 3	n/a	17	1035-1120
			24	3203-06.5, 3215.4-18.2, 3221.2-24, 3229.8-38, 3251-53.8, 3284-87, 3299-3301.8, 3308-12.2, 3318-20.6, 3333.5-36.6, 3339.2-42.2, 3348-51, 3365.1-71, 3375-83, 3385-88, 3403.5-06