Chemistry: plan and section of two blast furnaces. Coloured engraving by W. Lowry, 1804, after D. Mushett. https://www.rawpixel.com/image/13969065/image-paper-cartoon-crossFree Image from public domain licenseThe electric furnace in the foundry at the Farrell-Birmingham Corporation. Ansonia, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12326117/image-person-fire-smokeFree Image from public domain licenseStirring molten gold and silver in furnace. El Dorado Canyon, Nevada. Sourced from the Library of Congress. https://www.rawpixel.com/image/12325101/image-person-gold-public-domainFree Image from public domain licenseThe electric furnace in the foundry of the Farrel-Birmingham Corporation. Ansonia, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12326374/image-person-public-domain-womanFree Image from public domain licenseTapping a furnace in the foundry of the Farrell-Birmingham, Corporation. Ansonia, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12326368/image-person-art-public-domainFree Image from public domain licenseA gunsmith's shop: a customer talks to the gunsmith, while an assistant works metal in a furnace. Woodcut by J. Amman. https://www.rawpixel.com/image/14008766/image-cartoon-face-personFree Image from public domain licenseChemical engineering: detailed plan of a blast furnace designed by William Strickland. Engraving by B. Tanner after W.… https://www.rawpixel.com/image/14002688/image-paper-public-domain-gunFree Image from public domain license[Untitled photo, possibly related to: Tapping a furnace in the foundry of the Farrell-Birmingham, Corporation. Ansonia… https://www.rawpixel.com/image/12326116/image-person-public-domain-factoryFree Image from public domain licenseTwo children wait nervously while an alchemist secretively concocts a mixture at his stove. Pen and wash drawing by G.… https://www.rawpixel.com/image/13973503/image-cartoon-person-medicineFree Image from public domain licenseThe electric furnace in the foundry of the Farrel-Birmingham Corporation. Ansonia, Connecticut. Sourced from the Library of… https://www.rawpixel.com/image/12325804/image-person-smoke-public-domainFree Image from public domain licenseAluminum casting. Duds, rejected for imperfections, are thrown back into the furnaces for recasting. Location: a large… https://www.rawpixel.com/image/12307092/image-person-art-airplaneFree Image from public domain license[Untitled photo, possibly related to: Tapping a furnace in the foundry of the Farrell-Birmingham, Corporation. Ansonia… https://www.rawpixel.com/image/12326376/image-person-public-domain-factoryFree Image from public domain licenseMany of the farmers living in Santa Clara, Utah, have central heating plants in their homes. This is one of the home… https://www.rawpixel.com/image/12150297/image-plants-art-vintageFree Image from public domain licenseFurnace for converting gold dust into solid metal. Pony, Montana. Sourced from the Library of Congress. https://www.rawpixel.com/image/12272567/photo-image-gold-wood-public-domainFree Image from public domain licensePouring water on hot ashes from the blast furnace. Bethlehem steel mill, Sparrows Point, Maryland. Sourced from the Library… https://www.rawpixel.com/image/12283915/photo-image-public-domain-water-architectureFree Image from public domain licenseThe electric furnace at the Farrell-Birmingham Corporation. Ansonia, Connecticut. Sourced from the Library of Congress. https://www.rawpixel.com/image/12277707/photo-image-person-fire-smokeFree Image from public domain license