Mo. Rev. Stat. § 171.185
Materials recovery and recycling facility prohibited, when (city of ...
171.185. Materials recovery and recycling facility prohibited, when (city of Chesterfield). — No school district located in any city of the third classification with more than forty-six thousand eight hundred but fewer than forty-seven thousand inhabitants shall operate a materials recovery and recycling facility within five hundred feet of a residential property.
(L. 2010 H.B. 1692, et al.)