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How does that grating get there on the engineering level?

April 26, 2017Engineering grating level

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How does that grating get there on the engineering level?

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It just appears there. One minute there’s an open space, the next minute, presto! there’s a grating blocking the exit. There’s a trigger about halfway down the ramp on the inside – go in backwards (facing the entryway) and you can see it appear.