{"url_path":"/register/2026-06-17/2026-12120","section_key":"summary","section_title":"3i RR Holdings GP LLC, et al. and Regional Rail, LLC-Control Exemption-Massachusetts Central Railroad Corporation","topic":"register","document":{"doc_type":"Notice","doc_date":"2026-06-17","source_url":"https://www.federalregister.gov/documents/2026/06/17/2026-12120/3i-rr-holdings-gp-llc-et-al-and-regional-rail-llc-control-exemption-massachusetts-central-railroad","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"Surface Transportation Board"},"word_count":28,"has_tables":false,"body_markdown":null}