1989 GAEA 1: - a triptych of sand and soil collected on a 10,000 kilometre journey from all over South Africa, made for the reception area of Rand Merchant Bank.
1995 PSEPHOS (2m X 3m) nine panels with 18 pebble types, collected from the nine provinces of South Africa for the Billiton headquarters.
1996 Telkom's Art and the Internet project - a work entitled DISCUS;
2000 KRING VAN KENNIS (Circle of Knowledge) a 33 ton circle of stones installed at the main entrance to the Rand Afrikaans University and consisting of eleven massive stones with texts engraved in the eleven languages of South Africa.
2001 WINDFALL, an installation of 168 granite tiles depicting financial terms and the names of the winds of the world for the atrium of the new NEDCOR head office in Sandton; UMHLABATHI, a work consisting of 200 handfuls of sand collected from the nine provinces of South Africa and installed at the main entrance of the Mpumalanga Legislature Building.
2002 CHIASMUS, an installation of large glass floor panels with text at the new MTN headquarters, Roodepoort.
2003 PHILOSOPHERS’ AVENUE, a large walkway of ‘prehistoric’ stones in the courtyard, new Dimension Data headquarters, Bryanston; the permanent installation WRITING IN THE SAND, ABSA Bank, Johannesburg.
2004 PRISON SENTENCES, granite plaques commemorating the prison sentences of the eight accused at the Rivonia Trial, installed at the Constitutional Court of South Africa;
2006 SIGNS OF PEOPLE, a ‘language work’ installed in the central light shaft of the Origins Museum, University of the Witwatersrand; GARDEN OF WORDS III, a memorial garden for 15 000 plants, installed in Cape Town on the main lawn of Kirstenbosch Botanical Garden for the South African National Biodiversity Institute (SANBI) to coincide with the third assembly of the Global Environmental Facility (GEF); CLAVIS SCRIPTORIUM, a large installation in the foyer of the Standard Bank Global Leadership Centre; WOOD CONCERTO IN FOUR PARTS, installed at Black residence, Bantry Bay.
2007 LONG SHADOWS seven granite shadows laid in the floor at the entrance to the Constitutional Court of South Africa.