[dirtboy]

It was not clear what function the missing material played in oil production.

It's usually used in logging wells.

[Dog Gone]

It could be that, or it might have even been something as harmless as NORM, Naturally Occurring Radioactive Material, which is a essentially a low-level waste by-product. There are a lot of better things to make a dirty bomb out of, which is what the concern is here, I'm guessing.

[spunkets]

"It's usually used in logging wells."

Can it be used to log in to FR?

[TheBattman]

I was just going to ask - what in the sam heck is Nigeria doing with nuclear materials? Of course, I had not idea nuclear material was required for oil drilling/pumping.