The Journal of San Diego History Summer 1974, Volume 20, Number 3 Contents of This Issue A Brief History of the Granite Industry in San Diego County Back to the article   Page 61.   Page 62. Construction of original Sweetwater Dam showing use of granite riprap (1887)   Page 63. Construction of El Capitan Dam showing use of granite (c 1935)   Page 63. Old log cabin in Harmony Grove, Escondido, showing use of granite in chimney   Page 65. Wire saw at Pyramid Granite Company, Escondido   Page 65. Surface plate with delicate measuring device atached 33