Title | Date | Type | ||
---|---|---|---|---|
26 | Zion National Park Camp, rock quarry explosion | 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942 | Image | |
27 | Zion National Park Camp, rock screening and crushing plant | 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942 | Image | |
28 | Zion National Park Camp, sewer line in ditch | 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942 | Image |