URL: https://digitalcollections.hoover.org/objects/40702 Collection Structure Poster collection > ... Give ample warning before blasting! A blast can not be recalled - nor can a life that's been lost! ... [Verso:] Wilyum Jan says ... Item Title ... Give ample warning before blasting! A blast can not be recalled - nor can a life that's been lost! ... [Verso:] Wilyum Jan says ... Collection Title Poster collection Artist Chapin Issuing Body Hercules Powder Company Date Created 1939/1940? Description Drawing of an explosion in a rock quarry. Double-sided. Subject(s) Military aspects Prevention World War, 1939-1945 Accidents Quarries and quarrying Explosives industry Industrial accidents Safety measures United States Priorities, Industrial Economic aspects Explosions Safety education, Industrial Industrial safety Explosives Language(s) English Country of Origin United States Country of Origin United States Place Published Wilmington, Delaware, United States Dimensions Overall: 22 x 16 in. (55.9 x 40.6 cm) Format Poster Medium political posters Color color Color color Hoover ID Poster US 6871 Record Number XX343.31078 Collection Guide https://oac.cdlib.org/findaid/ark:/13030/kt829015km Rights This work may be protected by copyright laws and is provided for educational and research purposes only. Any infringing use may be subject to disciplinary action and/or civil or criminal liability as provided by law. If you believe you are the rights holder and object to Hoover's use of this work, please contact the Hoover Institution Library & Archives.