Between 10 January and 6 February 1956, a total of 512 high-altitude vehicles were launched from the five different launch sites: Gardermoen, Norway; Evanton, Scotland; Oberpfaffenhofen and Giebelstadt, West Germany; and Incirlik, Turkey. 54 were recovered and only 31 provided usable photographs covering over 1.1 million square miles (2.8 million square km) of the Sino-Soviet bloc. Numerous balloons were shot down by the Soviets or blown off course. MiG fighter pilots learned that they could target the balloons at sunrise when they would dip into shooting range because the lifting gas would cool at night and become denser, reducing lift and causing the balloons to descend to lower altitudes.
The missions led to diplomatic protests from many countries, including Albania, China, and the Soviet Union, for the balloon flights over their territories. The United States claimed that the project was a worldwide meteorological survey and compared the balloons to "miniature satellites" out of the way of commercial air traffic. Secretary of State John F. Dulles said that after the air force compiles the data, it would be contributed to the International Geophysical Year 1957–58 for all countries to access. Asked if the United States had the right to send these balloons anywhere around the globe, he answered, "Yes, I think that we feel that way," saying that international law was obscure on "who owns the upper air".
The Soviets recovered many of these balloons, and their temperature-resistant and radiation-hardened film would later be used in the Luna 3 probe to capture the first images of the far side of the Moon. Newly developed American spy planes, such as the U-2, would replace the Genetrix balloons in carrying out reconnaissance over denied airspace. Employees from the aeronautical division of General Mills would go on to found Raven Industries.
Huntington, Tom (2023-02-03). "Spying with Balloons? It's Been Done Before". HistoryNet. https://www.historynet.com/balloon-spies/
"The "daddy" of the balloon industry « A Taste of General Mills". 2011-11-29. Archived from the original on 2011-11-29. Retrieved 2023-06-23.{{cite web}}: CS1 maint: bot: original URL status unknown (link) https://web.archive.org/web/20111129172522/http://www.blog.generalmills.com/2011/08/the-daddy-of-the-balloon-industry/
Final Report: Project 85012, Report No. 1227, General Mills, Inc, Mechanical Division, Engineering Research & Development Department, September 4, 1953. https://web.archive.org/web/20130709015146/http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD0019116
Abel, Elie (1956-02-08). "Dulles hints U.S. will try to curb balloon flights". The New York Times. pp. 1, 11. The balloons operate between altitudes of 30,000 and 50,000 feet. International law is obscure on the question of who owns the upper air. I don't know how high a balloon has to go before you get out of bounds of sovereignty. Communist China ... charged tonight that the United States was sending military reconnaissance balloons over its territory.
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
Schwarz, Jon (2023-02-07). "U.S. Sent "Weather" Balloons to Spy on China and the Soviet Union in the 1950s". The Intercept. Asked if the United States feels that they have the right to send these balloons at a certain height anywhere around the globe, Dulles answered, Yes, I think that we feel that way. https://theintercept.com/2023/02/07/china-balloon-soviet-union/
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
Fowler, Shane (25 July 2017). "Mystery solved: 'Thing in the woods' revealed as CIA spy camera, 55 years later". Canadian Broadcasting Corporation. Retrieved 26 July 2017. http://www.cbc.ca/news/canada/new-brunswick/thing-in-the-woods-cia-spy-camera-1.4221705
"Project Genetrix". ufxufo.org. Retrieved 12 May 2017. http://ufxufo.org/russell/gophergenetrix.htm
Steve Blank (28 January 2010). "Balloon Wars: Part 16 of the Secret History of Silicon Valley". steveblank.com. Retrieved 12 May 2017. https://steveblank.com/2010/01/28/balloon-wars/
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
"Faxes From the Far Side". www.damninteresting.com. Retrieved 2015-10-23. http://www.damninteresting.com/faxes-from-the-far-side/
Abel, Elie (1956-02-08). "Dulles hints U.S. will try to curb balloon flights". The New York Times. pp. 1, 11. The balloons operate between altitudes of 30,000 and 50,000 feet. International law is obscure on the question of who owns the upper air. I don't know how high a balloon has to go before you get out of bounds of sovereignty. Communist China ... charged tonight that the United States was sending military reconnaissance balloons over its territory.
Burnett, Maurice G. (2012). Hexagon (KH-9) Mapping Camera Program and Evolution. United States of America: Center for the Study of National Reconnaissance. ISBN 978-1-937219-08-6. The program, code name GENETRIX, called for light-weight plastic balloons carrying optical cameras and electronic equipment to be floated across the U.S.S.R. ... capable of remaining above 60,000 feet ... The cover story ... stated that the project was part of a worldwide meteorological survey. 512 vehicles were launched. 978-1-937219-08-6
"U.S. reply to Soviet protest on balloon launchings". The New York Times. 9 February 1956. p. 10.
Abel, Elie (1956-02-08). "Dulles hints U.S. will try to curb balloon flights". The New York Times. pp. 1, 11. The balloons operate between altitudes of 30,000 and 50,000 feet. International law is obscure on the question of who owns the upper air. I don't know how high a balloon has to go before you get out of bounds of sovereignty. Communist China ... charged tonight that the United States was sending military reconnaissance balloons over its territory.
Abel, Elie (1956-02-08). "Dulles hints U.S. will try to curb balloon flights". The New York Times. pp. 1, 11. The balloons operate between altitudes of 30,000 and 50,000 feet. International law is obscure on the question of who owns the upper air. I don't know how high a balloon has to go before you get out of bounds of sovereignty. Communist China ... charged tonight that the United States was sending military reconnaissance balloons over its territory.
Schwarz, Jon (2023-02-07). "U.S. Sent "Weather" Balloons to Spy on China and the Soviet Union in the 1950s". The Intercept. Asked if the United States feels that they have the right to send these balloons at a certain height anywhere around the globe, Dulles answered, Yes, I think that we feel that way. https://theintercept.com/2023/02/07/china-balloon-soviet-union/
"Faxes From the Far Side". www.damninteresting.com. Retrieved 2015-10-23. http://www.damninteresting.com/faxes-from-the-far-side/
Siddiqi, Asif A. (2018). Beyond Earth : a chronicle of deep space exploration, 1958-2016 (PDF) (Second ed.). Washington, DC: NASA. pp. 15–16. ISBN 978-1-62683-042-4. OCLC 1019855116. 978-1-62683-042-4
Using film from U.S. spy balloons to take pictures of the Moon http://www.svengrahn.pp.se/trackind/luna3/SpyBalloon.htm
Pedlow, Gregory W.; Welzenbach, Donald E. (1992). The Central Intelligence Agency and Overhead Reconnaissance: The U-2 and OXCART Programs, 1954-1974 (PDF). Washington DC: History Staff, Central Intelligence Agency. pp. 84–88. Archived from the original (PDF) on 2013-08-17. https://web.archive.org/web/20130817020101/http://www.gwu.edu/sites/www.gwu.edu/files/downloads/U2%20%20history%20complete.pdf
"RAVEN Industries Inc. - The balloon encyclopedia". stratocat.com.ar. https://stratocat.com.ar/stratopedia/48.htm