[PJ-Comix]

It will also render a large piece of ground useless for a long time to come.

Not really all that long. Most likely no longer than a radioactive half-life of a mere 30,000 years.

[Bush2000]

Not really all that long. Most likely no longer than a radioactive half-life of a mere 30,000 years.

Yeah, but it depends on what and how much ground is exposed. As long as it doesn't seep into the water table, it's possible to remove the ground and bury it elsewhere.