Mo. Rev. Stat. § 407.1610

It shall be unlawful for any person or entity to engage in the speculative accumulation of asphalt roofing shingles in any city not within a county. For the purposes of this section, the term "speculative accumulation" means the collection or storage of asphalt shingles without a showing that, during a calendar year, at least seventy-five percent of the material accumulated during the year, either by weight or by volume, will be recycled for other use.