14C and coal

[LiveFreeOrDie]

In another thread, randman said:

I think carbon-dating for coal is a problem. Why is there any carbon left to show up on the tests?

The short answer is that minute quantities of coal are generated by the radioactive decay of certain isotopes.

The long answer can be found in the following FAQ at talk.origins:

http://www.talkorigins.org/faqs/c14.html