Esorfranki slipped into the red in the year ended February 2011, with a diluted headline loss per share of 12.8c after headline earnings per share of 70.5c a year.
The Competition Tribunal has confirmed the settlement agreement between the Competition Commission and Aveng after one of its subsidiaries was found guilty of cartel activity.
Infrastructure development company Aveng has pointed to a continued 'tough operating environment' in the local construction sector.
Eskom defended itself against claims by Murray & Roberts of late payment for work done at the Medupi and Kusile power stations.
Protech Khuthele has reported basic headline earnings per share of 5.9c for the 6 months ended August 2010 from 13.0c for the corresponding period a year ago.
Aveng Group says that it has won a mining management contract with Kenmare in Mozambique worth $$200m.
Construction group Murray & Roberts said it expected continuing diluted headline earnings per share to remain within 5%.