TY - BOOK AU - Deakin,R.C. ED - Geological Survey of Papua New Guinea. TI - Shallow seismic refraction investigations in the Porgera Mine area, Enga Province T2 - Technical note PY - 1987/// CY - [Port Moresby] PB - Dept. of Minerals and Energy, Geological Survey KW - Porgera Gold Mine KW - Seismic prospecting KW - Papua New Guinea KW - Porgera River Region KW - Gold mines and mining KW - Mining geology KW - Geology ER -