This ca. 1910 photograph of men mining in the Sirena Mine in Guanajuato, Mexico was produced by The Philadelphia Museums. The silver gelatin print shows a line of men on handmade scaffolds mining silver from the walls by dim candlelight. The photograph measures 9.125" long by 7" high and is mounted on heavy cardboard with rounded corners (12" by 9.75"). The back of the piece describes silver mining in Mexico. The photograph is in very good condition. The cardboard backing has some small chips at three corners, minor edge wear, and slight warping.