{"data":{"id":"us/18-cfr-1b.4","jurisdiction":"us","citation":"18 CFR 1b.4","heading":"b.4 Types of investigations.","body":"Investigations may be formal or preliminary, and public or private.","path":["Title 18—Conservation of Power and Water Resources","CHAPTER I—FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY","SUBCHAPTER A—GENERAL RULES","PART 1b—RULES RELATING TO INVESTIGATIONS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-18.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:34Z","sha256":"a9b71e4e96bdd59e39824d10a277f56e9d05d43890f56a85b368540c21f6db1d","source_id":"us-cfr","stale":true,"prev":"us/18-cfr-1b.3","next":"us/18-cfr-1b.5"},"notice":"GroundRules: Original legal text. Not legal advice."}