{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-083175","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2024-07-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:16.338570+00:00","generated_at":"2026-05-31T21:38:25.883058+00:00","sec_items":["1.04"],"event_type":"regulatory","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Martin Marietta receives MSHA order at Walstrum Quarry for safety violation; corrective action taken","bullets":["MSHA issued section 107(a) order at Walstrum Quarry in Idaho Springs, CO on July 8, 2024.","Truck driver walked on top of truck to level aggregate without fall protection or PPE.","No injuries occurred; corrective action was taken and order terminated."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-083175","json":"https://secwatch.observer/filing/0000950170-24-083175.json","markdown":"https://secwatch.observer/filing/0000950170-24-083175.md","text":"https://secwatch.observer/filing/0000950170-24-083175.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095017024083175/0000950170-24-083175-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095017024083175/mlm-20240708.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T21:38:25.883058+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"}