43 CFR 5040.4 - What is the effect of designating sustained-yield units?
Designating new sustained-yield forest units abolishes previous O. and C. master unit or sustained-yield forest unit designations. Until new sustained-yield forest units are designated for the first time in accordance with 43 CFR part 5040, the current master unit designations will continue to be in effect.
Title 43 published on 2013-10-01
no entries appear in the Federal Register after this date.