This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 423793011300 Top Depth: 12220 Ft. Bottom Depth: 12770 Ft. lease_name: H.H. CALLOWAY G.U. sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: DUNBAR W operator_name: AMOCO PRODUCTION COMPANY state_name: Texas county_name: Rains