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Sliding Prong Grapnel
Dynamic Load Monitoring Ltd. (DLM)
The sliding Prong Grapnel comprises a square cross-section shank on which are slid double prongs in alternate directions. Broken or damaged prongs can be slipped off and renewed. Prongs are in three sizes, known as A, B and C. Type C is the largest prong and is usually used when the cable is believed to be buried.