It is almost impossible to produce enough charcoal, year after year, to keep the furnaces burning because managed woodlands don't grow fast enough. This means that the secondary industry of charcoal burning uses large tracts of woodland to make charcoal, and is one of the main limitations on iron production. Making iron requires a great deal of charcoal as fuel. It breeds tough, hardy, independent men with an unsentimental eye for profit.people with the surname 'Smith' (or its equivalent) shows the historical importance of ironworking! They even make the machinery to make more machines, as they make tools for themselves and other crafts not to mention the working parts of many workshops. Smiths make everything that the world of work uses, from ploughshares, horseshoes, and sickles to knives, nails, and wagon tires. Their skills make tools for the farm, the home and the workshop alike. Blacksmiths are the heart of many communities.