Clause 804(less dust than screenings) has a whole range of versatile uses. It is sold lose by the tonne.
Screenings-Very dusty gravel
2" clean medium sized stone
An empty small bag.
Regular 4" block with a 30 degree offset.
4" clean large stone
Regular 4" block with a 90 degree offset.
Regular sized blocks used for most building jobs.
Drainage stone-small smooth rounded stone