Last Angel (1912) illustrated by Nicholas Roerich. Original public domain image from Wikimedia Commons. Digitally enhanced… https://www.rawpixel.com/image/10184793/image-face-person-artFree Image from public domain licenseFighting fire of rice straw stack in rice field near Crowley, Louisiana by Russell Lee https://www.rawpixel.com/image/12108027/image-face-plant-personFree Image from public domain licenseBlue smoke background https://www.rawpixel.com/image/11537893/blue-smoke-backgroundView license[Untitled photo, possibly related to: Train coming up the valley on a narrow gauge track, Ouray County, Colorado. Notice the… https://www.rawpixel.com/image/12109305/image-steam-plant-artFree Image from public domain licenseDragon FireThe desert at sunset with the Dragon Fire in the distance. Photo by A. Rehkopf, NPS. https://www.rawpixel.com/image/11071550/photo-image-cloud-sunset-plantFree Image from public domain licenseGeneral view from top of coal mine tressle, showing burning slag heaps and holes of slate, Maidsville, West Virginia.… https://www.rawpixel.com/image/12242671/photo-image-plant-sky-forestFree Image from public domain licenseCoke ovens and burning slag heaps make heavy impenetrable smoke over whole town, day and night. Longacre, West Virginia.… https://www.rawpixel.com/image/12242855/photo-image-steam-person-skyFree Image from public domain licensePulpwood for the paper mills in Berlin, New Hampshire. Sourced from the Library of Congress. https://www.rawpixel.com/image/12321021/image-paper-person-smokeFree Image from public domain license[Untitled photo, possibly related to: Coke ovens and burning slag heaps make heavy impenetrable smoke over whole town, day… https://www.rawpixel.com/image/12242584/photo-image-person-sky-smokeFree Image from public domain license[Untitled photo, possibly related to: Coke ovens and burning slag heaps make heavy impenetrable smoke over whole town, day… https://www.rawpixel.com/image/12242631/photo-image-steam-plant-smokeFree Image from public domain licenseBurning slag near coal mine, Scotts Run, West Virginia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12243853/photo-image-smoke-mountain-public-domainFree Image from public domain licenseCoke ovens and burning slag heaps make heavy impenetrable smoke over whole town, day and night. Longacre, West Virginia.… https://www.rawpixel.com/image/12242864/photo-image-smoke-mountain-public-domainFree Image from public domain license[Untitled photo, possibly related to: Caples, West Virginia. With coal mine tipple in foreground]. Sourced from the Library… https://www.rawpixel.com/image/12247927/photo-image-plant-sky-forestFree Image from public domain licenseCaples, West Virginia. With coal mine tipple in foreground. Sourced from the Library of Congress. https://www.rawpixel.com/image/12247947/photo-image-plant-smoke-treeFree Image from public domain license[Untitled photo, possibly related to: Houses in abandoned mining town with remains of coal tipple at right, Mohegan, West… https://www.rawpixel.com/image/12247935/photo-image-plant-smoke-treeFree Image from public domain license[Untitled photo, possibly related to: Charleston, West Virginia. Part of the Union Carbon and Carbide Chemicals Corporation… https://www.rawpixel.com/image/12248173/photo-image-plant-sky-smokeFree Image from public domain license[Untitled photo, possibly related to: Slag heaps at Nanty Glo, Pennsylvania]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12256433/photo-image-plant-person-skyFree Image from public domain license