<div class="description">
Detail view of blast furnaces and feed buckets at an unknown manufacturing plant, with a worker visible on the bottom left-hand side of the photograph. Used to chemically reduce and physically convert iron oxides into liquid iron or "hot metal," a blast furnace consists of cylinder-shaped steel stacks lined with refractory brick. Feed buckets are used to convey and deposit charges of raw materials, such as iron ore, coke, and limestone, into the interior of the blast furnace, where they eventually are converted to liquid slag and iron. This photograph is one of a set of fourteen stereographs detailing the production of iron and steel by various processes.</div>
after 1895 <div style="display: none;">date QS:P571,+1895-00-00T00:00:00Z/7,P1319,+1895-00-00T00:00:00Z/9</div>
This file was contributed to Wikimedia Commons by <a href="https://en.wikipedia.org/wiki/en:Science_History_Institute" class="extiw" title="w:en:Science History Institute"><span title="library, museum, and archive in Philadelphia, United States">Science History Institute</span></a> as part of a cooperation project. The donation was facilitated by the <a href="https://en.wikipedia.org/wiki/Digital_Public_Library_of_America" class="extiw" title="w:Digital Public Library of America">Digital Public Library of America</a>, via its partner PA Digital.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/6w924b80w">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/bc8efa614543325ae19a0b900637d0f2">bc8efa614543325ae19a0b900637d0f2</a></li>
<li>Science History Institute identifier: padig:SHI-6w924b80w</li></ul></span>