Your scrap boards can be classified as reclaimable scrap metal and can be
collected by one of numerous scrap dealers that specifically deal with
printed circuit manufactures.

Your router / drilling materials are a little different. I'm not familiar
with your operation or collection equipment, but  I can tell you what we
have done.  If you have a Spencer type vacuum system that not only collects
all drill / router scrap, but also separates it by size into two sections,
you should consider running a TCLP for the large chunk stuff.  Our has to
be treated as Hazardous waste, and that side of the collector is a 90 day
storage area.  The fine dust tested non-hazardous for us and we trash it.

Gerry