What do the terms sized, screened, and minus mean?
These terms refer to the size of the decorative rock, as defined by the largest piece which would fit through a screen of a pre-determined size. The terms also help to denote the approximate amount of fines present in a product. For instance, the term ‘sized’ can signify up to 15% fines in the product, whereas ‘screened’ can mean 10% to 20% fines in the product, and when we visualize a product described by the term ‘minus’ we know it will have 60% to 70% fines.
