Tracks for Army halftracs cars, made of rubber firmly bonded to steel members, are cured under heat and pressure in tracks… https://www.rawpixel.com/image/12307026/image-plant-hand-personFree Image from public domain licenseButte, Montana. Anaconda Copper Mining Company. First step in making bits for a pneumatic drilling machine is to heat a rod… https://www.rawpixel.com/image/12151915/image-plant-person-artFree Image from public domain licenseBoilers provided to heat the garment factory at Jersey Homesteads, Hightstown, New Jersey by Russell Lee https://www.rawpixel.com/image/12145645/image-person-art-vintageFree Image from public domain licenseQuarters of Men in Fort Sedgwick, generally known as Fort Hell by Timothy H O Sullivan and Alexander Gardner https://www.rawpixel.com/image/14324225/image-frames-person-woodenFree Image from public domain licenseFuel oil conservation. An experienced serviceman checks the efficiency of the family heating plant. This man measures the… https://www.rawpixel.com/image/12307921/image-face-plant-handFree Image from public domain licenseElmer Thomas, migrant to California, preparing coffee along the roadside near Henrietta [i.e., Henryetta,] Oklahoma by… https://www.rawpixel.com/image/12169926/image-plant-person-artFree Image from public domain licenseConversion. Copper and brass processing. A mechanical feeder is here shown running billets of brass into an electric… https://www.rawpixel.com/image/12307058/image-technology-wood-factoryFree Image from public domain licenseMexican mother and child. Fires built in old galvanized tubs are used both for heat and cooking throughout the Mexican… https://www.rawpixel.com/image/12174977/image-person-art-firesFree Image from public domain licenseFighting fire of rice straw stack in rice field near Crowley, Louisiana. Position of fighters gave an idea of intense heat… https://www.rawpixel.com/image/12166905/image-plant-person-grassFree Image from public domain license[Untitled photo, possibly related to: Sweeping hot coals from outdoor earthen oven after it has been heated to proper… https://www.rawpixel.com/image/12169218/image-person-art-vintageFree Image from public domain licenseMembers of the 179th Airlift Wing Maintenance Group must heat the four turbo prop engines of the C-130H Hercules in the cold… https://www.rawpixel.com/image/8728236/photo-image-airplane-public-domainFree Image from public domain licenseOven for Drying Insects. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900)… https://www.rawpixel.com/image/403520/free-illustration-image-oven-dryer-dentonFree Image from public domain licenseWashington, D.C. Fixture from a heating unit in a wrecked church on Independence Avenue. Sourced from the Library of… https://www.rawpixel.com/image/12268057/photo-image-pattern-public-domain-architectureFree 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 licensePile of rabbit brush and sage brush which will be used for heating, etc. Farm on the Vale-Owyhee irrigation project, Malheur… https://www.rawpixel.com/image/12174370/image-cloud-plant-grassFree Image from public domain licenseMrs. Hutton builds fire in outdoors burner which heats the water for laundering. Pie Town, New Mexico by Russell Lee https://www.rawpixel.com/image/12171016/image-face-plant-personFree Image from public domain licensePalm-lined sidewalk at Tempe, Arizona. Irrigation combined with tropical heat produces a luxuriant growth in this section by… https://www.rawpixel.com/image/12169660/image-shadow-plant-personFree Image from public domain licenseBlacksmith heating iron in forge, Southern Paper Mill construction shed, Lufkin, Texas by Russell Lee https://www.rawpixel.com/image/12170971/image-paper-person-artFree Image from public domain licenseFighting fire of rice straw stack in rice field near Crowley, Louisiana. Position of fire fighters give an idea of the the… https://www.rawpixel.com/image/12168143/image-plant-person-artFree Image from public domain license