De or het grindwinning?

The correct Dutch article is:

de grindwinning

Rule Words ending in -ing: almost always de. See the rule

How to use grindwinning

the grindwinningde grindwinning
this grindwinningdeze grindwinning
that grindwinningdie grindwinning
our grindwinningonze grindwinning
your grindwinningjouw grindwinning
every grindwinningelke grindwinning
which grindwinning?welke grindwinning?
a big grindwinning / the big grindwinningeen grote grindwinning, de grote grindwinning