The man was airlifted to Dubbo Hospital with non life-threatening injuries.

Workplace safety authorities are investigating after a male was injured by a semi-trailer at near Cobar on Monday.

The 52-year-old man was working at Burthong Road, Nymagee about 12.20pm on Monday when the semi-trailer he was working on fell off the blocks it was propped on, and onto his chest.

NSW Police, NSW State…