Clause 804
Clause 804(less dust than screenings) has a whole range of versatile uses. It is sold lose by the tonne.
Bags
An empty small bag.
Blocks
Quarry Products
Drainage stone-small smooth rounded stone
4" clean large stone
Regular 4" block with a 90 degree offset.
Concrete block that weighs one tonne.
Gravel
Screenings-Very dusty gravel
Aggregate mix
A much bigger block with a cavity/hole going through the center.
Plastering sand
The bigger thicker blocks up from the 4"