Ground proximity warning system
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Article
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1975
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Elsevier Science
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English
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To meet the needs of safety and rescue workers, the portable and convertible SK.7 and SK.5 multipurpose tools have been developed. They can be used in turn as a spade, pick and hoe, and then with the blade of the spade withdrawn, as a pick, axe and shear (model SK.5) together with nail pliers and a