09Mar
Coal, Steel Play Important Roles in US
Via the Duluth News Tribune: We need coal. When the ore or taconite leaves the Iron Range, it goes to the steel mills. At the mills, ore (iron oxide) is put into the blast furnace along with coke and limestone. Coke is processed from coal to remove impurities. When heated in the blast furnace, a […]
- On March 9, 2021 Read More