This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 210793169300 Top Depth: 0 Ft. Bottom Depth: 790 Ft. lease_name: SIMPSON UNIT M KA sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: COLD SP 33-28N-6W operator_name: UNKNOWN state_name: Michigan county_name: Kalkaska