"The **process starts with blast furnaces** (tall iron and steel structures lined with heat-resistant materials) **that produce liquid** (cast or pig) **iron by smelting iron ore, coke, and limestone**." ([Location 1889](https://readwise.io/to_kindle?action=open&asin=B08SGC3TD3&location=1889)) --- **Tags** -- [[quotes]], [[steel]], [[manufacturing]], [[iron-ore]], [[limestone]], [[coking-coal]] **Source** -- [[202412030828 - B - How the World Really Works]]