Leonardus Christoffe Grobbelaar

Interwaste Holdings Ltd. engages in the provision of commercial and industrial waste management services. It operates through the Logistics and Facilities segments. The Logistics segment includes on-site management, waste recycling, commodity trading, and transportation. The Facilities segment focuses on the disposal of waste volumes using a solution or facility such as blending, hazardous treatment, converting to refuse derived fuel, or disposal via landfill. Its services include integrated waste management, waste classification, waste disposal, landfill construction and maintenance, and waste logistics. The company was founded by William Alan Hardy Willcocks and Bronwyn Lee-Ann Willcocks on June 26, 1989 and is headquartered in Germiston, South Africa.

Part of Séché Environnement SA, Enviro-Fill (Pty) Ltd. is a South African waste management company. The company is based in Gauteng, South Africa. Enviro-Fill (Pty provides waste management services and was founded by Leonardus Christoffe Grobbelaar.

Fraser Alexander Ltd. provides mining waste disposal and bulk handling services. Its solutions include customised, integrated mining and packaged solutions. The firm offers mining and remining, processing, moving, deposition, rehabilitation, water treatment and construction services. The company was founded by Fraser Alexander and Fred Alexander in 1912 and is headquartered in Boksburg, South Africa.

Casa Caritas operates a mental health clinic. The private company is based in Johannesburg, South Africa.