Engels saw first hand what greedy industrialists were doing to their workers in the Lancashire cotton industry. Boiler explosions were commonplace up until the Vulcan insurers made a stand and insisted on proper boiler safety inspections. And in cases of tampering with safety relief valves they would not pay out.
It was common practice to overstoke the fire before the first shift and add weight to the pressure relief valve - this resulted in several large scale boiler explosions destroying big mills in the early morning and killing many workers in the Lancashire cotton industry.
Articles on the history of boiler insurance show that the US had a worse record despite having the advantage of seeing the innovations in UK boilers. Some element of NIH played a part but mostly it was that industrialists greed was paramount and the workers powerless. eg.
It makes reasonable sense to pay your workers a living wage for the work that they do rather than pay them less than they can sensibly live on. Ford was about the first in the USA to actually do this.
In the UK there were some decent industrialists mostly of quaker families who did treat their workforce fairly - examples include some household names like Pilkingtons, Cadbury, Bournville, Marks&Spencer.
But most of the rest were complete bastards who built large factories and employed the equivalent of bonded labour stuck very high density slum housing. It was not surprising that unions were formed in some cases the manager really did hold the whip hand - literally.
Regards, Martin Brown