6 entries match your criteria.
Historical Markers in Willow Springs, Illinois
Chicago is the county seat for Cook County
Willow Springs is in Cook County
Cook County (819) ►
ADJACENT TO COOK COUNTY
DuPage County (43) ►
Kane County (52) ►
Lake County (67) ►
McHenry County (38) ►
Will County (142) ►
Lake County, Indiana (71) ►
Porter County, Indiana (36) ►
Berrien County, Michigan (82) ►
Touch name on this list to highlight map location.
Touch blue arrow, or on map, to go there.
ADJACENT TO COOK COUNTY
DuPage County (43) ►
Kane County (52) ►
Lake County (67) ►
McHenry County (38) ►
Will County (142) ►
Lake County, Indiana (71) ►
Porter County, Indiana (36) ►
Berrien County, Michigan (82) ►
Touch name on this list to highlight map location.
Touch blue arrow, or on map, to go there.
1 ► Illinois, Cook County, Willow Springs — Caution - Do Not Dig —  |
| Buried in this area is radioactive material from nuclear research conducted here 1945-1949. Burial area is marked by six corner markers 100 ft. from this center point. There is no danger to visitors. — — Map (db m208226) HM | |||
| 2 ► Illinois, Cook County, Willow Springs — Dawn of the Atomic Age — |
| On December 2, 1942, scientists at the University of Chicago produced the first controlled nuclear chain reaction in human history. Soon after, the reactor was relocated to “Site A” in the Palos Park Forest Preserve where scientists performed . . . — — Map (db m208231) HM | |||
| 3 ► Illinois, Cook County, Willow Springs — Saint James at Sag Bridge Church and Cemetery — |
| St. James at Sag Bridge Church & Cemetery. Listed on the National Register of Historic Places. Parish founded 1833. Present church built 1853 — — Map (db m203578) HM | |||
| 4 ► Illinois, Cook County, Willow Springs — The Chicago Piles — |
| Built at the University of Chicago and called Chicago Pile–1 (CP-1), the world’s first nuclear reactor was moved to Site A in the Red gate Woods in 1943 and renamed CP-2. The site Boasted 10 tons of uranium metal, 42 tons of uranium oxide, and . . . — — Map (db m208229) HM | |||
| 5 ► Illinois, Cook County, Willow Springs — The World’s First Nuclear Reactor — |
| The world’s first nuclear reactor was rebuilt at this site in 1943 after initial operation at the University of Chicago. This rector (CP-2) and the first heavy water moderated reactor (CP-3) were major facilities which around which developed the . . . — — Map (db m208225) HM | |||
| 6 ► Illinois, Cook County, Willow Springs — You Are Now Entering Site A — |
| Looking for a remote location to conduct top secret nuclear experiments, the U.S. Army corps of Engineers built the “Site A” research facility on land leased from the Cook County Forest Preserve in Red Gate Woods. In addition to research . . . — — Map (db m208233) HM | |||