/,;v"aw/Lf^f7v/(SihisaSeamitus. Morgan andSharak) SANDSNORK. On ArraJus, a refined version of similar devices found elsewhere in the galaxy used for siphoning air The sandsnork consisted of two parts a collapsible Kibe and a miniature pump The tube was composed of nine concentric cylinders, each 40 cm long, mat fitted inside each other The biggest section, the one that stayed deepest m the sand, had at its base a bayonet fitting, oriented perpendicularly to the axis of sym metry, where the pump was mounted The innermost, or upper, tube was fitted with a butterfly valve to keep sand out The seven middle tubes had pressure-sensitive oil seals at both ends All rune cylinders were made of spice plastic (fittings were plasteel), and the assembly weighed about 775 to 790 grams The pressure-sensitive seals permitted an ingenious method of setting up the sandsnork When the snork was introduced to an environment of greater than 1 26 standard atmospheres and unstrapped the seals forced each successive tube to periscope upward, due to the pressure gradient This way, the sandsnork worked its upper end just above the surface The lower pressure above the sand signalled the snork to cease penscopmg Then the pump was attached at the bottom and air was brought beneath the surface The tube system was typically deployed from the back of a stilltent, where the pump was normally earned The pump itself was designed by Uurpar T Tomz of Cazpezia II (8,157-8210), and is a standard 10 2 by 26 5 by 8 cm m size It runs on cheap fuel cells and weighs only 1 23kg Its compactness and light weight made the sandsnork system especially useful to the Fremen Since the tube system could extend as much as 3 6 meters, and since the upper tube would extend no more than 40 cm above the surface, it made both sandstorm bunal and predator avoidance relatively routine operations for Fremen away from their sietch SARDAUKAR.