Section R. 299.2368 - Samples of drill cuttings and coresRule 2368.
(1) A person who drills or deepens a well under these rules shall take and preserve, for the duration of the drilling, properly identified samples of the drill cuttings taken from the base of the drift to the total depth.(2) A permittee of a well shall take and preserve drift samples when specifically requested by the supervisor of mineral wells or authorized representative of the supervisor of mineral wells. The samples shall be available to the supervisor of mineral wells upon request.(3) A permittee of a well shall deliver 1 complete set of drill cutting samples, washed and dried, to the supervisor of mineral wells within 90 days after drilling completion. Samples not requested may be disposed of in a manner approved by the supervisor of mineral wells upon drilling completion if the supervisor of mineral wells requests cuttings before the commencement of drilling.(4) If a permittee of a well obtains whole cores or core samples during the drilling of a well, then the permittee shall provide the supervisor of mineral wells with a minimum of 90 days' notification of his or her intention to dispose of or destroy the whole cores or core samples. If requested by the supervisor of mineral wells, as prescribed by the notification, the permittee shall make available to the supervisor of mineral wells the whole cores or core samples.Mich. Admin. Code R. 299.2368