https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14014725Edit ImageSaveSaveEditCropCustom TextA slate quarry and some of the instruments used. Etching by Bénard.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 780 x 1200 px | 300 dpiLarge JPEG 1472 x 2264 px | 300 dpiFree DownloadA slate quarry and some of the instruments used. Etching by Bénard.More