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Balloon mail refers to the transport of mail (usually for weight reasons in the form of a postcard) carrying the name of the sender by means of an unguided hydrogen or helium filled balloon. Since the balloon is not controllable, the delivery of a balloon mail is left to good fortune; often the balloon and postcard are lost. A found balloon should be returned to the sender (by conventional post) with an indication of the discovery site, so that the sender can determine how far their balloon flew. Frequently balloon mail is sent as part of a balloon competition. Balloons filled with helium can travel big distances. On 22. November 2008 the Austrian Oskar Haberlandt started a balloon in Wildon, Austria and it descended in Mirenki, Russia. That's a trajectory/travelling range of 2321 km. Since 2003 Mr. Haberlandt reached with his balloons started in Austria 38 states in Europe. Besides racing, balloon mail has been used for spreading information and propaganda materials, in particular for spreading propaganda to the population in countries with dictatorial governments. A balloon can be released from outside the sphere of influence of these governments and, wind permitting, can travel several hundred kilometers. This method of balloon mail has been used by private activists to distribute leaflets to North Koreans discussing the health of their leader, Kim Jong-il.[1] [edit] References
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