Recycled glass is collected from various means, including by direct receipt from businesses and recycling centers. Once the glass is received, it is sorted via optical sorting that separates glass colors, as well as removing contaminants such as ceramic, metals and stone. Various types of magnets and vacuum systems further clean up the glass to remove any small trace of metals and light materials such as paper and other organic material.

Once the glass is properly sorted and cleaned, it is crushed and screened to size the material down to certain fines. For use as a partial cement replacement, ACS requires that our glass powder to be of a very specific sieve size to properly undergo pozzolanic features.