{"operation":"document","citation":"PHMSA-2016-0136-0055","title":"National Transportation Safety Board - Investigation and Findings: Over-pressurization of Natural Gas Distribution System, Explosions, and Fires, in Merrimack Valley, Massachusetts (Presentation)","source_type":"rulemaking","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":"2019-12-16","effective_on":null,"summary":"Supporting & Related Material; Supplement; docket PHMSA-2016-0136.","machine_formats":{"json":"https://regulus.evalyn.ai/document/regulations-gov-document-phmsa-2016-0136-0055.json","markdown":"https://regulus.evalyn.ai/document/regulations-gov-document-phmsa-2016-0136-0055.md"},"app_url":"https://regulus.evalyn.ai/document/regulations-gov-document-phmsa-2016-0136-0055","source_url":"https://www.regulations.gov/document/PHMSA-2016-0136-0055","body":"National Transportation Safety Board - Investigation and Findings: Over-pressurization of Natural Gas Distribution System, Explosions, and Fires, in Merrimack Valley, Massachusetts (Presentation) Supporting & Related Material; Supplement. Filed in Regulations.gov docket PHMSA-2016-0136.","truncated":false,"body_characters":287}