ABSTRACTA device for detecting persons buried by avalanches which consists ofa hollow rod connected to a suction pump and detector for breath of personsburied. The rod is closed at its lower end by a probe head whose outerconfiguration is greater than that of the rod. A sleeve is carried by the rodadjacent the probe head and its outer configuration is smaller than that ofthe probe head, the sleeve consisting of porous metal and radial bores in therod on the inner side of the sleeve connecting to the hollow interior of therod. Pore ducts in the porous metal thereby connect the environmentalatmosphere adjacent the probe head with the detector and do not become blockedby snow into which the rod is thrust.
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