J.IIC-CG VOLUME 12 (1987)
Scientific Examination of Totem Poles at Ninstints World Heritage Site
This paper reviews briefly several non-destructive methods of assessing the condition of large wooden objects, and explains why X-radiography and the Pilodyn were selected for the in situ evaluation of the condition of the Ninstints Totem Poles. The development and theoretical basis of the radiographic procedure are explained. This procedure involves the quantitative interpretation of the radiographic images, and also requires an understanding of the moisture distribution in standing poles. The paper concludes that most of the poles were structurally sound at the base.
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