https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12239704Edit ImageSaveSaveEditCropCustom Text Make it Yours.Edit, remix and personalize with your own textCustomizeOr start from these designsConversion. Beverage containers to aviation oxygen cylinders. After the circumferential straps are welded to the cylindrical portion, in the metal division of a large Eastern rubber factory, rough edges and accumulated weld scale are removed by a skilled workman. The twin rotary brushes, shown above, do their work on the inside and outside of the cylinder in the same operation. This process is required in the manufacture of shatterproof oxygen cylinders for high altitude flying. Firestone, Akron, Ohio. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 911 px | 300 dpiLarge JPEG 3500 x 2656 px | 300 dpiBest Quality JPEG 10170 x 7718 px | 300 dpiTIFF 10170 x 7718 px | 300 dpi | 149.71 MBEdit ImageMonthlyYearlySave 50%Get PremiumProfessional design resources and creative toolsfromfrom$6.50/mo$78 billed yearlyUnlimited downloadsAd-free experienceUnlock millions of creative assets and our entire Creative Studio of editable templates, mockups and design toolsBuy Now