This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 4201300000 lease_name: E.O. HIERHOLZER reservoir_name: Unknown operator_name: CONTINENTAL OIL CO. (ROBERT MOSBACHER & HARKINS & log_source_name: RRC datum_name: Unknown state_name: Texas county_name: Atascosa