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Mining / Metals

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Started doing large diameter de-watering wells in Kumba Iron Ore mine,Drilling holes from 0-380m,starting with 22" diameter and stopped at 380m Installing 14" x 6mm wall weld on casing and screens to bottom of hole,Drilled trough Back Filled Materials containing 1-2m block's of banded iron stone and Quartzite using conventional drilling method's with Mud rotary,later used the Numa super jaws 24" bit to drill drive 22" X 10mm wall steel weld on casing to 50m+ according to the supplier's from America this was the deepest and most challenging conditions the bit has ever drilled,water strikes up 350l/p/second made conditions even more challenging,Used an old modified REEDRILL to do this as th...