This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 210793241200 Top Depth: 130 Ft. Bottom Depth: 3400 Ft. lease_name: ST BLUE LAKE 2-20 sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: BLULAKE 19-28N-5W operator_name: UNKNOWN state_name: Michigan county_name: Kalkaska