Geophysicists from ISGS lowered the Survey's geophysical instruments and a special television camera rented from Mt. Sopris Instruments into two 600-foot test holes drilled at the Braidwood Nuclear Power Plant site. The collected data will be used by a geological consultant to characterize the geology of the site for physicists, led by a research group at the University of Chicago, who are designing a series of high-energy physics experiments at the plant site. The downhole televiewer used for the project provides a full 360-degree view of the rocks in the wall of the drill hole, allowing the consultant to have a direct view of the materials and the orientation of any fractures that may be present in them. (Contacts: T. Young; C. Blakley)