{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-22-016709","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2022-08-11T23:59:59+00:00","discovered_at":"2026-05-14T18:03:58.581073+00:00","generated_at":"2026-06-24T01:15:50.294903+00:00","sec_items":["1.04"],"event_type":"regulatory","sentiment":"negative","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Martin Marietta receives MSHA imminent-danger order at Texas sand mine for unsafe conveyor cleaning","bullets":["MSHA issued section 107(a) order at Martin Marietta's Tin Top sand and gravel mine in Weatherford, TX.","Violation involved miner cleaning under a moving conveyor belt tail pulley, creating risk of entanglement.","Corrective action taken; no injuries occurred from the cited incident.","Order received July 28, 2022; reported via SEC Form 8-K on August 11, 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-22-016709","json":"https://secwatch.observer/filing/0000950170-22-016709.json","markdown":"https://secwatch.observer/filing/0000950170-22-016709.md","text":"https://secwatch.observer/filing/0000950170-22-016709.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095017022016709/0000950170-22-016709-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095017022016709/mlm-20220728.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T01:15:50.294903+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}