{"data":{"id":"us/30-cfr-57.11054","jurisdiction":"us","citation":"30 CFR 57.11054","heading":"Communication with refuge chambers.","body":"Telephone or other voice communication shall be provided between the surface and refuge chambers and such systems shall be independent of the mine power supply.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES","Subpart J—Travelways and Escapeways"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"cb4ee73b4366e40d3b1e092f8e3e22c9507d2c6d53bfe8094618df8bca263b6e","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.11053","next":"us/30-cfr-57.11055"},"notice":"GroundRules: Original legal text. Not legal advice."}