NEN ISO 7404-4 : 2017
Current
Current
The latest, up-to-date edition.
METHODS FOR THE PETROGRAPHIC ANALYSIS OF COALS - PART 4: METHOD OF DETERMINING MICROLITHOTYPE, CARBOMINERITE AND MINERITE COMPOSITION
Published date
09-12-2017
Publisher
Describes a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals.
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