ASPASA is a voluntary membership, private sector producer’s association. ASPASA is a member of the Chamber of Mines, but represents those companies that are in the business of producing aggregate and sand and is better known for operating quarries, sand pits and crushing operations.
Member of 
dmg events is an organiser of face-to-face events and a publisher of trade magazines for the international Construction, Energy, Coatings, Transport, Hospitality & Design industries.