Yes in theory they would have calculated to pump out over 300...

Yes in theory they would have calculated to pump out over 300 litres per second. KRM spent a very long time trying to grout and use staged pumping. The know there is gold in very good quantities over at the Hanging wall, possibly 50g/tonne. Its not about being safe every now and then its about a continuous safe environment then your miners can mine consistently and that's where the money's at, not 3 days on 4 days off. Many investors will be waiting for that positive news of the water ingress under control, the guys putting up the doe must be confident in a solution, they wouldn't through money into something they couldn't remedy,,one would think.