{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"4700097","name":"Lannon Quarry","status":"Active","status_date":"2011-12-05","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"WI","county":"Waukesha","nearest_town":"Lannon","operator_id":"L00630","operator_name":"Lannon Stone Products Inc","controller_id":"0166401","controller_name":"Dawson Trust dated June 20 2009","district":"M4","office":"Peru IL Field Office","employees":6,"latitude":43.148333,"longitude":-88.153889},"coverage":{"contributingSources":15,"registeredSources":20,"sourceRows":1212},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-17T05:35:58.500035+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"4700097","name":"Lannon Quarry"},"operator":{"type":"operator","id":"L00630","name":"Lannon Stone Products Inc"},"controller":{"type":"controller","id":"0166401","name":"Dawson Trust dated June 20 2009"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00630","name":"Lannon Stone Products Inc"},"object":{"type":"mine","id":"4700097","name":"Lannon Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4700097|L00630|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00524","name":"James D  Dawson"},"object":{"type":"mine","id":"4700097","name":"Lannon Quarry"},"validFrom":"1950-01-01","validTo":"2022-01-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4700097|M00524|1950-01-01|2022-01-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00524","name":"James D  Dawson"},"object":{"type":"operator","id":"L00630","name":"Lannon Stone Products Inc"},"validFrom":"1950-01-01","validTo":"2022-01-20","current":false,"derived":true,"evidenceMineId":"4700097","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4700097|L00630|1950-01-01|M00524|1950-01-01|112762"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0166401","name":"Dawson Trust dated June 20 2009"},"object":{"type":"mine","id":"4700097","name":"Lannon Quarry"},"validFrom":"2022-01-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4700097|0166401|2022-01-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0166401","name":"Dawson Trust dated June 20 2009"},"object":{"type":"operator","id":"L00630","name":"Lannon Stone Products Inc"},"validFrom":"2022-01-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"4700097","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4700097|L00630|1950-01-01|0166401|2022-01-21|34956"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":20,"firstDate":"2000-09-26","lastDate":"2024-07-26","metrics":{"daysLost":59,"injuries":20,"fatalities":0,"recentRows":5,"restrictedDays":171,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"29898","DOCUMENT_NO":"220242140007","ACCIDENT_DT":"07/26/2024","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"EXPLODING VESSELS UNDER PRESSURE","ACCIDENT_TYPE":"NEC","OCCUPATION":"Miner, Prospector, NEC","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"The miner was using the hose from a water truck to spray the plant down. 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