Fully removable head drums with lock ring closures

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Unformatted text preview: ubber washers are watertight, but the metal clamps are vulnerable to corrosion. This vulnerability makes these jars adequate expedients for short-term caching of small items, but Soldiers should not rely upon them to resist moisture for more than one year. D-12 TC 18-01 30 November 2010 Special Forces Caching Paint Cans D-74. Standard cans with reusable lids require a waterproof adhesive around the lids. Apply several coats of paint to the exterior of standard commercial cans because the metal in these cans is not as heavy as that in metal drums. Even when the exterior is thoroughly painted, paint cans are unable to resist moisture for more than a few months. METHODS OF EMPLACEMENT D-75. Because burial is the most frequently used method of emplacement, this section describes first the complete procedure for burial, followed by a discussion of emplacement procedures peculiar to submersion and concealment. The last area discussed is the preparation of the cache report—a vital part of a caching operation. BURIAL D-76. When planners complete the design and selection of items for a cache, they must carefully work out every step of the burial operation in advance. Horizontal and Vertical Caches D-77. Ordinarily, the emplacement team buries the cache vertically (it digs a hole straight down from the surface). Sometimes a horizontal cache, with the hole dug into the side of a steep hill or bank, provides a workable solution when a suitable site on level or slightly sloping ground is not available. A horizontal cache may provide better drainage in areas of heavy rainfall, but it is more likely to be exposed by soil erosion and more difficult to refill and restore to normal appearance. Dimensions of the Hole D-78. The exact dimensions of the hole, either vertical or horizontal, depend on the size and shape of the cache container. As a general rule, the emplacer should make the hole large enough for him to easily insert the container. He should make the hole’s horizontal dimensions about 30 centimete...
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