Catalan Forge
A simple kind of open-hearth furnace, once common in Catalonia, Spain, for producing malleable iron; some few are found there still, as well as in some other parts of Europe and America. In their crudest form they consist of a simple hole in the ground, in which are contained the ignited charcoal and the substances to be heated; the fire being urged by a blast of air blown in through one or more nozzles or tuyeres, from either a rude bellows or a tromp. See TROMP.