{"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":"0503808","name":"Portable Crusher #2"},"operator":{"type":"operator","id":"L16678","name":"Oldcastle SW Group, Inc"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08729","name":"A & S Construction Co"},"object":{"type":"mine","id":"0503808","name":"Portable Crusher #2"},"validFrom":"1982-09-01","validTo":"2024-07-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|L08729|1982-09-01|2024-07-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04483","name":"John L  Ary"},"object":{"type":"mine","id":"0503808","name":"Portable Crusher #2"},"validFrom":"1982-09-01","validTo":"2023-03-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|M04483|1982-09-01|2023-03-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04483","name":"John L  Ary"},"object":{"type":"operator","id":"L08729","name":"A & S Construction Co"},"validFrom":"1982-09-01","validTo":"2023-03-27","current":false,"derived":true,"evidenceMineId":"0503808","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|L08729|1982-09-01|M04483|1982-09-01|132069"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"0503808","name":"Portable Crusher #2"},"validFrom":"1998-01-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|M06183|1998-01-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0175640","name":"John Paul  Ary"},"object":{"type":"mine","id":"0503808","name":"Portable Crusher #2"},"validFrom":"2023-03-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|0175640|2023-03-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0175640","name":"John Paul  Ary"},"object":{"type":"operator","id":"L08729","name":"A & S Construction Co"},"validFrom":"2023-03-28","validTo":"2024-07-18","current":false,"derived":true,"evidenceMineId":"0503808","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|L08729|1982-09-01|0175640|2023-03-28|37450"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16678","name":"Oldcastle SW Group, Inc"},"object":{"type":"mine","id":"0503808","name":"Portable Crusher #2"},"validFrom":"2024-07-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|L16678|2024-07-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L16678","name":"Oldcastle SW Group, Inc"},"validFrom":"2024-07-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503808","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503808|L16678|2024-07-19|M06183|1998-01-05|136713"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503808","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"}}