| 摘要 |
A protective structure comprises a plurality of individual sections each one of which coacts with adjacent sections on both sides that are arranged seriatim to form an elongate unit. A closure at one end is removable affording access and egress from the structure and a closure at the other end is fixed in position. The individual sections are made, preferably, of FIBERGLAS that are spray-coated on the inside with a plastic.
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