title: The application of PGNAA borehole logging for copper grade estimation at Chuquicamata mine.
abstract: The field trials of a prompt gamma neutron activation (PGNAA) spectrometric logging method and instrumentation (SIROLOG) for copper grade estimation in production holes of a porphyry type copper ore mine, Chuquicamata in Chile, are described. Examples of data analysis, calibration procedures and copper grade profiles are provided. The field tests have proved the suitability of the PGNAA logging system for in situ quality control of copper ore.
authors.affiliation: CSIRO, Exploration and Mining, P.O. Box 883, Kenmore, QLD 4069, Australia. jacek.charbucinski@csiro.au
authors.forename: J
authors.initials: J
authors.lastname: Charbucinski
authors.forename: O
authors.initials: O
authors.lastname: Duran
authors.forename: R
authors.initials: R
authors.lastname: Freraut
authors.forename: N
authors.initials: N
authors.lastname: Heresi
authors.forename: I
authors.initials: I
authors.lastname: Pineyro