>>1245380A lot of them were used in pharmaceutical plants, where a lot of steam would be generated already through chemical processes, and the risk of chemical fires was too great.
The UK highstreet chemist, Boots, used to own pharmaceutical plants before they outsourced it to other companies. For shunting operations inside plants, they used fireless locos.
Smaller shunters such as those used for hauling 2-3 wagons of delicate materials have since been replaced with battery operated shunters, such as in places like Sellafield in the UK.
