NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

Significance: The missile test and assembly building was an integral part of Nike Missile Base SL-40. At the missile assembly area, Nike crews uncrated, assembled, and tested the missiles. The building was built in 1958 from standardized drawings approved by the Corps of Engineers, which were designed by the firm of Leon Chatelian, Jr., of Washington D.C. Nike buildings were considered modified emergency buildings. Originally, they were to be pre-fabricated structures, but were rather unsightly and did not contribute to troop morale and, therefore, were changed to modified emergency design.
Survey number: HAER IL-117-T