I stumbled across this slideshow the other day. I'm sorry, it's in French :( Basically it is a visit of Clairefontaine's plant in France. I was geeking out when I found it and thought you guys would be the only ones understanding my excitement!
It's a slideshow with comments, not an article, so I think it will be interesting even if you don't understand French, but let me know if you want me to translate something specific (if I'm allowed?...)
I learnt how energy consuming this industry is. I had never really thought about that before, but really our passion is not kind on the planet... I also learnt that almost all of Clairefontaine's operations are maintained in France, and that 60% of its revenue are made there. They also were very reluctant to start distributing their products in supermarkets, and still have different offers between supermarkets and small specialized retailers!