S.D. Codified Laws § 40-32-21
Exemption of operations otherwise regulated
Any part of a milk plant's operations subject to Grade A regulations as set forth in chapter 39-6 or in chapter 39-8 , is exempt from all provisions of this chapter except the licensing provisions.
Source: SL 1957, ch 92, § 1; SDC Supp 1960, § 4.1901.