TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: No Known Copyright TI - Apparatus at U.S. Department of Agriculture facility ID - 9p290938x DA - 1950/// YR - 1950 AV - Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 4 VL - Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 4 AN - Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 4 UR - https://digital.sciencehistory.org/works/9p290938x AB - General view of an unidentified apparatus at a U.S. Department of Agriculture facility. A radioactive materials sign and protective glass panel are visible to the right of the apparatus. The U.S.D.A. commonly used radioactive material for a variety of research and testing, including the study of radioactive substances as fertilizer, as well as to model the impacts of radioactive material in soil and test the effectiveness of new insect control techniques or materials. KW - Nitrogen fertilizer industry KW - Scientific apparatus and instruments KW - United States. Department of Agriculture KW - United States. Bureau of Chemistry and Soils LA - ER -