There is a series of posts here on metalworking in pre-modern cultures: Collections: Iron, How Did They Make It? Part I, MiningDo you have a favorite reference on how much various places used Coal from 1000-1600 outside of England? (Google only wants to show me that. Were peat and wood huge things too?)
That's where I got the bit about stripping forests in the absence of coal. I have no references on coal usage directly.