Thanks Rodger. I had always thought of mud as containing a lot of water. Brent ________________________________ From: Rodger C. Fry <rcfry@comcast.net> To: 'Utah Astronomy' <utah-astronomy@mailman.xmission.com> Sent: Sunday, January 8, 2012 3:26 PM Subject: Re: [Utah-astronomy] iPad free fall from "edge of space" Brent, By definition, mud is sediment with roughly equal parts of sand, silt and clay. Dry mud is this material that has had the water evaporate leaving only a low moisture content. Rodger Fry -----Original Message----- From: utah-astronomy-bounces+rcfry=comcast.net@mailman.xmission.com [mailto:utah-astronomy-bounces+rcfry=comcast.net@mailman.xmission.com] On Behalf Of Brent Watson Sent: Sunday, January 08, 2012 12:59 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] iPad free fall from "edge of space" What is dry mud?