GREY:PGDIF - Post by User
Post by
shnepson Oct 24, 2016 12:11pm
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Post# 25378396
RC Drilling
RC DrillingI spoke with my drillers on site as to possible reasoning behind the breakage. As my thoughts were confirmed in all likelyhood it's a lack of driller experience or rushing the situation. Too much downward pressure scrapes out the rock instead of percussioning the rock loose. Too much air presssure or not enough downward pressures will cause the drill head to turn on the broken materials and again pulverize. The pounding of the same materials under the head not only makes for inefficient drilling but pulverizes all the material including spliting some diamonds. It's not likely the rock hardness just drilling procedures and experience.