The methodology used to prove the clay reserves at Maguga Dam, Swaziland

At Maguga Dam borrow areas for clay core material were proved by the implementation of a simple methodology that identified the potential borrow areas, delineated the potential clay core deposits to determine the available volume and thirdly, implemented a detailed laboratory testing programme. The testing programme determined the engineering behaviour of the material and consequently the suitability for use as clay core material. This paper describes how this methodology was successfully implemented at Maguga Dam.