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註釋The results described in this report constitute an integral part of a project undertaken in 1986 in response to requests by both the mining industry and its regulators to analyze the continuing rope failures or near failures occurring despite mandatory wire-rope examinations with electro-magnetic (EM) instruments at regular intervals. This report analyzes no. 3 head rope in Denison-Potacan Potash Co.'s Clover Hill mine at Sussex, N.B. The rope was examined both in situ and on the shop floor using 3 different EM testers in the field, and 5 on the shop floor.