From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The slide reads: "Comparison of the cumulative estimated dose with diagnostic x-rays 1951 to 1958.
Grinding slab metate at the Lost City with numerous holes
Transcribed Notes: Notes on photo sleeve Los City, Nevada. Holes and stones were used to grind grains, etc. (Credit: W.A. Davis); 'Gypsum Cave, bedrock mortars near cave' - W.A. Davis