The National Scientific Balloon Facility (NSBF) Annual Report FY 1973 includes information on facilities, major equipment, long duration program, extreme altitude program, heavy load program, balloon materials and quality control, consolidated instrument package, computerized ground station, PCM ... Show moreThe National Scientific Balloon Facility (NSBF) Annual Report FY 1973 includes information on facilities, major equipment, long duration program, extreme altitude program, heavy load program, balloon materials and quality control, consolidated instrument package, computerized ground station, PCM Command system, down range telemetry station, flight services by the NSBF crew, personnel, funding, panel and committee meetings, and plans for FY1974. It reports on 118 flights flown for 48 scientific groups from 34 institutions and 7 countries with an increased success rate over previous years. Show less