The application of PGNAA borehole logging for copper grade estimation at Chuquicamata mine.

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.

[1]  G. R. Boynton,et al.  Borehole Activation Analysis by Delayed and Capture Gamma Rays Using a 252 Cf Neutron Source , 1972 .

[2]  J. Charbuciński,et al.  Prompt gamma neutron activation analysis method and instrumentation for copper grade estimation in large diameter blast holes. , 2003, Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine.