Povučen
Cancels and replaces the first edition (1980). Specifies the method for determining the grindability index of hard coal using the Hardgrove machine. Also specifies the procedure for calibrating the test machine and for preparing the standard reference coal samples.
POVUČEN
ISO 5074:1980
POVUČEN
ISO 5074:1994
95.99
Povučen
29. 9. 2015.