I don't get the point of the bridge.
It will allow them to dig away at the south and west walls, but you've still got to keep equipment down there to dig away the centre of the excavation once that's done. Ultimately the bridge has to come out too while there's still equipment gradually stranding itself down there. How does that end really differ from having to dig away at a remaining side ramp? A crane still lifts the shovel out at the end, right?
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It will allow them to dig away at the south and west walls, but you've still got to keep equipment down there to dig away the centre of the excavation once that's done. Ultimately the bridge has to come out too while there's still equipment gradually stranding itself down there. How does that end really differ from having to dig away at a remaining side ramp? A crane still lifts the shovel out at the end, right?
42