CONCRETE144. Flow tables. 191. Fresh concrete analysis. 186-189,190-192. Grinding machines. 182. Length comparator. 192. Loft deflection test. 203-204 microcoring .. TECNOTEST. 2.1.1 astm C 39. NF P18-411. UNE 83304. UNI 6686. EN 12390-4. dIN 51220 bs 1610. COMPRESSION TESTING MACHINES developments in the.rock crushing machine by technotest,Fine Rock Crushing with Jaw Crushers - 911 MetallurgistFeb 1, 2017 . The introduction of a new machine for fine crushing, or The Blake multiple-jaw crusher, which, in combination with the ordinary Blake breaker, could be used in the reduction of ores or any hard and brittle substance to almost any degree of fineness. How can you use a jaw crusher to crush fine enough to.