General view of a Stokes Tablet Press at the U.S. Department of Agriculture's Agricultural Engineering Laboratory facility. A tablet press is a mechanical device that compresses granulated material into tablets or pellets of a uniform size and weight. In this instance, the tablet press likely was used to create fertilizer pellets.
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“Stokes Tablet Press at Agricultural Engineering Laboratory,” 1950–1959. Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/w3763680b.
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