The last report I thought I saw was that the vertical tunnels required
a larger engineering effort, to lower large diameter caisson "pipe"
into the excavation in the tidal submerged apparently horizontal and
vertical "mine" works. The crane and what they had there wasn't
cutting it, nor the pumps. That could have been on Leonard Nimoy's
(Happy Birthday! I share one with him) "In Search Of..." show which
New Jersey film maker Kevin Smith debates whether it could survive
today with the Internet.