Steam still rises from the chimneys of Serbia's only oil refinery as it slowly grinds to a halt under US sanctions, fuelling fears of job losses and uncertainty.

Though workers in high-visibility orange jumpsuits can be seen moving around the Pancevo refinery, and large tanker trucks drive in and out, no crude oil has entered the facility in two months.

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.