Vachowski, Brian . 1998. Signposts for Snow Trails. 9823 2806. Missoula, MT: U.S. Department of Agriculture, Forest Service, Missoula Technology and Development Center.
Describes signpost systems that work in shallow, moderate, and deep snow-packs. Traditional signposts anchored firmly in the ground work best for trails with low and moderate amounts of snow. Free-floating signposts supported only by the snow around them work best in moderate to deep snow-packs. Telescoping signposts and signposts with temporary bases work for shallow, moderate, and deep snowpacks, but these systems are rarely used because they are more expensive and are harder to install and maintain than traditional or free-floating signposts.
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