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Yes, but do you really need a qualified Mining Engineer to run a quarry? We get by very well with blokes who are registered quarry managers. They have years of experience in the quarry game before becoming managers. They are hands on and practical and, know what there workers want because, they...

Krusher, I'm just wondering why you would need a MSDS for crushed asphalt and concrete? My suggestion is if you get a gob full of asphalt then just pull out the MSDS for bitumen, either C170 or C320 it doesn't really matter. If you encounter a problem with dust from the crushed concrete then...

Macajm, pour a fine dust into the blast hole/s and let the water flow in the drill so it turns the dust into mud. Move the drill rod up & down and this will allow the mud to act like a grout, filling the voids. If you still have voids down, say, 2-3 rod lengths, then turn off the air on...

Scott, the THD penetrometer is most likely identical to the standard CPT. I used to work for the Dept of Main Roads in Queensland, Australia, and they had there own method of CPT, but it was identical to the Australian standards. Most government departments will have there own test methods or...