Whilst doing a quick google search I came across a list post from last year: Dear List, The Bowling Ball meteorite simulation experiment proposed has been done before. Amateur rocketeers at the Tripoli Rocketry Association have lofted bowling balls to ~10K meters on rockets and released them to impact in the salt flats. This was an inadvertent experimental series, as part of contests called bowling ball lofts, when the bowling balls sometimes got loose of their recovery apparati, but descriptions have been printed I recall of the resulting impacts and more can easily be obtained by questioning witnesses and examining private photos. A person to contact who may know more about such is Mark Clark of the Tripoli Rocketry Association. He has organized at least one bowling ball loft, and likely knows of organizers of others. He can be reached at markclark@inficad.com. Francis Graham, Physics, Kent State U. ******************** The original message is at: http://www.pairlist.net/pipermail/meteorite-list/2003-January/ 017519.html