I've seen some very interesting images of railways serving APCM quarries and works lately. Can anyone suggest some good online reference material to check things out in more detail?
Of marginal relevance maybe, but as it happens I was searching for info on the Houghton Regis APCM plant yesterday and came across this site, which gives a good deal of details of many cement works. Although it doesn't focus particularly on the rail side there are links out to other sites:-