This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 211392460600 Top Depth: 3037 Ft. Bottom Depth: 3075 Ft. lease_name: HECKLE sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: DENNISON operator_name: UNKNOWN state_name: Michigan county_name: Ottawa