OUCC Proceedings 6 (1974)


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Neil Boulton

A considerable proportion of the expedition's time was devoted to surveying, notably the extensions to La Boriza, which were extremely time consuming. Accurate surveys to CRG Grade 4 were carried out in major caves; other surveys were generally Grades 1-2.

The instruments used were : Suunto compass; Suunto clinometer; fibreglass tape. The underwater survey pad, which had been constructed for the 1970 expedition and had proved indispensable, seemed to have been abstracted in the intervening 12 months. In consequence, we had to use a large number of ordinary note pads; the results survived.