COMPARISON BETWEEN THE NEUTRON-GAMMA AND GAMMA-GAMMA TECHNIQUES FOR ASH PREDICTION IN 140 MM DIAMETER QUALITY-CONTROL HOLES AT THE CALLIDE MINE

Authors
BORSARU M MILLITZ P CERAVOLO C
Citation
M. Borsaru et al., COMPARISON BETWEEN THE NEUTRON-GAMMA AND GAMMA-GAMMA TECHNIQUES FOR ASH PREDICTION IN 140 MM DIAMETER QUALITY-CONTROL HOLES AT THE CALLIDE MINE, Nuclear geophysics, 7(1), 1993, pp. 125-132
Citations number
NO
Categorie Soggetti
Geosciences, Interdisciplinary","Metallurgy & Mining","Nuclear Sciences & Tecnology
Journal title
Nuclear geophysics → ACNP
ISSN journal
09698086
Volume
7
Issue
1
Year of publication
1993
Pages
125 - 132
Database
ISI
SICI code
0969-8086(1993)7:1<125:CBTNAG>2.0.ZU;2-U
Abstract
A comparison between neutron-gamma and gamma-gamma techniques was carr ied out at the Callide Mine in 140 mm quality control, water-filled bo reholes. The results show that the vertical resolution of the two tech niques in delineating the coal seams is comparable. However, the neutr on-gamma technique proved superior in predicting the ash content of th e coal seams. The standard deviation between the chemical assays and t he neutron-gamma and gamma-gamma predictions were 2.3 and 3.2% ash, re spectively.