CFR›Title 43›Subtitle B›Chapter II›Part 3130›Subpart 3137›Subject Group Optional Terms ContainsSections 3137.50–3137.52CorpusDaily eCFRDisplayed edition2026-05-12Last updated2026-05-12 Sections 3137.50 § 3137.50 What optional terms may I include in a unit agreement? 3137.51 § 3137.51 Under what conditions does BLM permit multiple unit operators? 3137.52 § 3137.52 How may I modify the unit agreement? Previous Obligations and Extensions Obligations and Extensions Next Participating Areas Participating Areas