Assertion: modern blast furnace | /r/HasAspect | hearth diameters of 6 to 14 m
Facets:
Source sentences:
text: Modern blast furnaces range in size from 20 to 35 m (70 to 120 feet), have hearth diameters of 6 to 14 m (20 to 45 feet), and can produce from 1,000 to almost 10,000 tons of pig iron daily.