- 1982 Bought Able Dredging at Mooney Creek thinking to supply central asphalt depot with fine sand – Sand turned out to be terrible!
- 1985 Margaret handed over administration to Dana at Chipping Norton
- 1987 Began sand removal from Port Botany in preparation for liquids berth. Ernest Dupere joined Benedict family
- 1988 Opened Mount Gilead Soil Quarry – just in time for the floods!
- 1988 Sold haulage business (Benedict Haulage) to subcontractors Aymsheen
- 1988 Darling Harbour – Bicentinenial – S&D products
- 1988-1991 “Mount Gilead soil extraction on banks of Nepean River for Lady Dorothy Macarthur Onslow”
