Wow, 2 years and no answers!
Let's open up the net a bit.
I know that folks from SLB were involved with drilling in the USA into cavity zones where a nuclear test had occurred.
I also now some drill-back operations have been carried out in Kazakhstan and the Pacific (French Islands) after nuclear tests in 80s-90s. All that expertise is needed today to shape up future inspections of countries testing nuclear weapons.
I hope somebody remembers or knows somebody that does.
Thanks in advance!
Note from moderator (Dave Taylor):
Guillermo, you are to be commended for your relentless pursuit of replies!
- For any of you who are wanting to contribute, but are maybe constrained by "company policy", I will happily post anonymously (no name etc) on your behalf, using my profile. Just email your input to me (firstname.lastname@example.org) and I will do the rest.
- For those of you who have a colleague who could contribute, please forward this thread to them and invite them to contribute.