Re: Compost materials???
Depending on the type of pine, Shortleaf pine is an important source of turpentine. Western Hemlock is a source of tannic acid used for tanning leather. This may help you out.
But I agree with bob, try an experimental patch if you are in doubt.
Like Worm Farmer states, worms are very helpful with the decomposition of wood chips or shavings.
Catch ya on the rebondKim