__ __ __ _ _____ ____ ___ __ __ oO _ __ ___ _ Oo _ _ X ==_ _ __ ____ _== X _ _ +-- --+ __ +-- --+ X = == === ==== ____ ______ __ ___ ________ ==== === == = X +-- --+____ -- -- ___ - --+the blast furnace+-- - ___ -- -- ____+-- --+ eP _ _ ___ ___ __ __ ______ __ __ eP - - _ _ ___ _ - - _ ____ _ _ ____ ____ +-- --+ __ _ _ __ _ +-- --+ X = == = ____ ____ _ _____ __ ___ _____ ___ = = X +-- --+ ____ === === ____ ==== epidemic ==== ____ = ==== _____ +-- --+