Comments by "Bo McGillacutty" (@Mrbfgray) on "ABC News"
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@staralioflundnv At 1st blush I would think seismic activity, even severe quakes, would have negligible effect on zone beyond plug due to above stated reason....given distance underground.
It would of course be of concern for the surface infrastructure. I'd want everything possible to be underground where it's safe, turbine, electrical, etc. Also having everything at constant temperature and protected from snow drifts, freezing and so on.
Rocks come off the cliffs like bullets and pass right thru any manmade object, vehicles, structures or whatever, even with common modest 7 mag quakes. Dad would order everyone to stay underground until aftershocks dissipated.
Funny tangent story but relevant: Easy Go is about 3 miles plus long (called Easy Going because prior to that tunnel they had to transport all the 100s of employees up treacherous switchbacks on steep avalanche prone roads to around 10k alt original access and offices)
Ray Gray (dad) designed the tunnel and the ditch on the side of it, for most of the length of the long tunnel mining process "Gray's ditch" was a standing joke bc it was dry until near the end when hitting abundant water and it filled to the top.
This was not trivial bc the entire tunnel must be bigger and more expensive to accommodate the ditch. Dad simply measured the flow from many existing tunnels per length and averaged the results to figure the flow rate needed and it turned out to be on the money, pun intended. Some luck no doubt but everyone forgot the Gray's Ditch joke after that.
SO...that plug could have been installed deep under and still capture most of the water available. In some places the water would blast out against the train cars as you passed, it was like Disneyland but better.
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