John Cooper, Pete Hann, Sarah Hann, Kate Lawrence and Adrian Vanderplank. John drilled a series of holes in the floor. Established it was just over 500mm thick at the deepest point. Adrian then came along and put 40gm cord in some of them. Not enough cord for all of them. Used water to tamp the holes where possible. Removed the bottom ladder to prevent damage and because it needs lengthening. Fumes produced about as thick as the mist on the surface. 2 hours. John.
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