Engineering firm Monadelphous has forecast a rise in first half and full year revenue due to increasing construction activity.

Agribusiness Ruralco Holdings has reported a $13.8 million net profit but adds it is yet to decide whether or not to bid for Elders' rural services business.

Gold miner Newcrest says it will vigorously defend a new legal claim from another company relating to its NSW licences.

The owner of Radio Rentals, Thorn Group, says tough market conditions and spending on expansion is likely to cause a profit fall.