Question: What is the plant that produced TNT until 1976 and is located between the towns of Elwood, Manhattan and Wilmington in northeastern Illinois?

Context paragraphs:
Illinois Route 390: Illinois Route 390 (IL 390), previously known as the Elgin–O'Hare Expressway, now known as the Elgin–O'Hare Tollway, is a electronic toll highway in northeastern Illinois.  IL 390 currently connects U.S. Route 20 (US 20, Lake Street) in Hanover Park to the intersection with Interstate 290 (I-290) and Thorndale Avenue in Itasca.  The only other towns it borders are Schaumburg and Roselle.  IL 390 is 6.01 mi long.  Construction is underway to extend the road from I-290 to the western edge of O'Hare International Airport.

WYKT: WYKT is a radio station in northeastern Illinois.  It is licensed to Wilmington, Illinois and is a CBS Sports Radio affiliate.  It has an effective radiated power of 1,300 watts at 147 meters height above average terrain.

Libby Komaiko: Dame Libby Komaiko began her career at Northeastern Illinois University in 1974.  She is a professor of dance in the Department of Music and the Dance Program.  She is the Founder/Artistic Director of the Ensemble Español Spanish Dance Theater, the in-residence dance company at Northeastern Illinois University.

Midewin National Tallgrass Prairie: The Midewin National Tallgrass Prairie (MNTP) is a tallgrass prairie reserve and United States National Grassland operated by the United States Forest Service.  The first national tallgrass prairie ever designated in the U.S. and the largest conservation site in the Chicago Wilderness region, it is located on the site of the former Joliet Army Ammunition Plant between the towns of Elwood, Manhattan and Wilmington in northeastern Illinois.

Joliet Army Ammunition Plant: Joliet Army Ammunition Plant (JOAAP, formerly known as the Joliet Arsenal) was a United States Army arsenal located in Will County, Illinois, near Elwood, Illinois, south of Joliet, Illinois.  Opened in 1940 during World War II, the facility consisted of the Elwood Ordnance Plant (EOP) and the Kankakee Ordnance Works (KNK).  In 1945, the two were deactivated and combined forming the Joliet Arsenal.  The plant was reactivated for the Korean War and renamed Joliet Army Ammunition Plant during the Vietnam War.  Production of TNT ended in 1976, and the major plant operations closed shortly after in the late 1970s.  The facility briefly revived an automated load-assemble-pack (LAP) artillery shell operation that was managed by the Honeywell Corporation during the Reagan administration in the 1980s before it was finally closed.

Illinois Route 19: Illinois Route 19 (abbreviated IL-19, or simply Illinois 19) is a major east–west arterial road in northeastern Illinois, United States.  It runs from Illinois Route 25 (Liberty St.) in Elgin, to Lake Shore Drive (U.S. Route 41) on the north side of Chicago.  Illinois 19 is 33.64 mi long.  For much of its length, it is also known as Irving Park Road and Chicago-Elgin Road.

Braidwood Nuclear Generating Station: Braidwood Generating Station is located in Will County in northeastern Illinois, USA.  The nuclear power plant serves Chicago and northern Illinois with electricity.  The plant was originally built by Commonwealth Edison company, and subsequently transferred to Com Ed's parent company, Exelon Corporation.

Suburban Prairie Conference: The Suburban Prairie Conference (SPC) was an organization of nineteen high schools in northeastern Illinois, representing sixteen communities in Chicago's suburbs.  These high schools are all members of the Illinois High School Association.  The conference was subdivided into three divisions: North, East and South.  Participating communities are in Cook County, Illinois, DeKalb County, Illinois, DuPage County, Illinois, Grundy County, Illinois, Kane County, Illinois, Kendall County, Illinois and Will County, Illinois.  Its final membership consisted of:

WZRD (FM): WZRD (88.3 FM) is the student-run radio station at Northeastern Illinois University, Chicago, Illinois, US, founded in 1974.  The station serves the Chicago area.  The station is licensed by the FCC to Northeastern Illinois University.  WZRD broadcasts on a freeform radio format.

Manhattan, Illinois: Manhattan is a village in Will County, Illinois, United States.  The population was 6,071 at the 2006 special census.  The U.S. Census Bureau estimates the population to be 7,093 as of 2011 .  The community is located in northeastern Illinois approximately 50 miles southwest of Chicago.

Supporting paragraphs: Midewin National Tallgrass Prairie Joliet Army Ammunition Plant
Answer: Joliet Army Ammunition Plant