{"data":{"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":"2026-10-13T11:19:05.459773+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":"2402140","name":"Screen Plant"},"operator":{"type":"operator","id":"0051037","name":"Montana Mtls & Cons"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02239","name":"Richard J  Maronick  et al"},"object":{"type":"mine","id":"2402140","name":"Screen Plant"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|M02239|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02682","name":"Maronick Construction Llc"},"object":{"type":"mine","id":"2402140","name":"Screen Plant"},"validFrom":"1998-04-01","validTo":"2004-09-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|L02682|1998-04-01|2004-09-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02239","name":"Richard J  Maronick  et al"},"object":{"type":"operator","id":"L02682","name":"Maronick Construction Llc"},"validFrom":"1998-04-01","validTo":"2004-09-19","current":false,"derived":true,"evidenceMineId":"2402140","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|L02682|1998-04-01|M02239|1950-01-01|124455"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02239","name":"Edward M  Maronick  et al"},"object":{"type":"operator","id":"L02682","name":"Maronick Construction Llc"},"validFrom":"1998-04-01","validTo":"2004-09-19","current":false,"derived":true,"evidenceMineId":"2402140","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|L02682|1998-04-01|M02239|1950-01-01|124456"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"2402140","name":"Screen Plant"},"validFrom":"2002-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|M06183|2002-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051037","name":"Montana Mtls & Cons"},"object":{"type":"mine","id":"2402140","name":"Screen Plant"},"validFrom":"2004-09-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|0051037|2004-09-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"0051037","name":"Montana Mtls & Cons"},"validFrom":"2004-09-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402140","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402140|0051037|2004-09-20|M06183|2002-01-01|136955"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2402140","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}