This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 211372995600 Top Depth: 3300 Ft. Bottom Depth: 5500 Ft. lease_name: STATE CHARLTON /A/ sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: CHARLTON 2831N1WA operator_name: UNKNOWN state_name: Michigan county_name: Otsego