{"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":"3401883","name":"Parker Rock"},"operator":{"type":"operator","id":"0050167","name":"Parker Rock Inc"},"controller":{"type":"controller","id":"0128321","name":"Nicholas S Parker"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050167","name":"Parker Rock Inc"},"object":{"type":"mine","id":"3401883","name":"Parker Rock"},"validFrom":"2002-02-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401883|0050167|2002-02-07|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040597","name":"Michael C  Parker"},"object":{"type":"mine","id":"3401883","name":"Parker Rock"},"validFrom":"2002-02-07","validTo":"2016-09-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401883|0040597|2002-02-07|2016-09-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040597","name":"Michael C  Parker"},"object":{"type":"operator","id":"0050167","name":"Parker Rock Inc"},"validFrom":"2002-02-07","validTo":"2016-09-06","current":false,"derived":true,"evidenceMineId":"3401883","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401883|0050167|2002-02-07|0040597|2002-02-07|294"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0128321","name":"Nicholas S Parker"},"object":{"type":"mine","id":"3401883","name":"Parker Rock"},"validFrom":"2016-09-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401883|0128321|2016-09-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0128321","name":"Nicholas S Parker"},"object":{"type":"operator","id":"0050167","name":"Parker Rock Inc"},"validFrom":"2016-09-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"3401883","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401883|0050167|2002-02-07|0128321|2016-09-07|25685"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3401883","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"}}