https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13983041Edit ImageSaveSaveEditCropCustom TextMachinery used in the cooling and processing of copper. Etching by Bénard after L.J. Goussier.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 757 px | 300 dpiLarge JPEG 3400 x 2144 px | 300 dpiFree DownloadMachinery used in the cooling and processing of copper. Etching by Bénard after L.J. Goussier.More