De or het turfgraverij?

The correct Dutch article is:

de turfgraverij

Rule Words ending in -ij and -erij: usually de. See the rule

How to use turfgraverij

the turfgraverijde turfgraverij
this turfgraverijdeze turfgraverij
that turfgraverijdie turfgraverij
our turfgraverijonze turfgraverij
your turfgraverijjouw turfgraverij
every turfgraverijelke turfgraverij
which turfgraverij?welke turfgraverij?
a big turfgraverij / the big turfgraverijeen grote turfgraverij, de grote turfgraverij