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Ultrasonic studies of outburst-prone coals

โœ Scribed by Krzesinska, Marta

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
415 KB
Volume
34
Category
Article
ISSN
0148-9062

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Changes in the macroscopic structure of coal have been observed as an outburst-prone area is approached. Associated with this structural change was an increase in the concentration of paramagnetic centres. initial results suggested that this increase was not due to variation in maceral content with