My aunt also worked at Bishopton during WWII, the munitions factory was called the Royal Ordinance Factory, I think it is either still in existance or perhaps it closed a few years ago. There were other munition factories but my aunt did make the journey from Motherwell to Bishopton, a very long way by bus in those days, in black-out conditions too. She worked night-shift for the duration of the war I think.