{"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":"4503710","name":"LROCK Pit"},"operator":{"type":"operator","id":"0125055","name":"LROCK Industries"},"controller":{"type":"controller","id":"0042111","name":"John J  Bredfield"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0125055","name":"LROCK Industries"},"object":{"type":"mine","id":"4503710","name":"LROCK Pit"},"validFrom":"2012-08-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503710|0125055|2012-08-22|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0106241","name":"Lemmie  Rockford"},"object":{"type":"mine","id":"4503710","name":"LROCK Pit"},"validFrom":"2012-08-22","validTo":"2024-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503710|0106241|2012-08-22|2024-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106241","name":"Lemmie  Rockford"},"object":{"type":"operator","id":"0125055","name":"LROCK Industries"},"validFrom":"2012-08-22","validTo":"2024-12-31","current":false,"derived":true,"evidenceMineId":"4503710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503710|0125055|2012-08-22|0106241|2012-08-22|18764"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0042111","name":"John J  Bredfield"},"object":{"type":"mine","id":"4503710","name":"LROCK Pit"},"validFrom":"2025-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503710|0042111|2025-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0042111","name":"John J  Bredfield"},"object":{"type":"operator","id":"0125055","name":"LROCK Industries"},"validFrom":"2025-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4503710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503710|0125055|2012-08-22|0042111|2025-01-01|3676"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4503710","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"}}