Unknown fumes overcome two SA workers

Checks on a shipping container at a workplace in Adelaide have failed to determine the nature of fumes that overcame two workers.

The property was evacuated on Tuesday with the two workers treated by ambulance officers at the scene.

Fire crews used air monitoring equipment to test for the nature of the fumes but results were inconclusive.

The Metropolitan Fire Service says the container has been ventilated and the workplace handed back to management.