The Electricity Trust of South Australia is to construct a substation at a site on the northern comer of Anderson and Wycombe Roads, Aldgate (Fig.l). The single storey building of about 12 squares will be of modular block construction. The site was explored by 2 test pits, each about 3.5 ft. deep (Fig.l). Logs of these pits are included as Figures 2 and 3. The pits were excavated during an inspection of the site with Mr. B. Busbridge of E.T.S.A. on 16 November, 1970.