{"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":"3608744","name":"Lv #3 Slope"},"operator":{"type":"operator","id":"P24599","name":"C & L Coal Company"},"controller":{"type":"controller","id":"C16030","name":"Carl  Albert; John  Lucas"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12954","name":"Larry  Madenford et al"},"object":{"type":"mine","id":"3608744","name":"Lv #3 Slope"},"validFrom":"1997-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|C12954|1997-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23782","name":"M & M Anthracite Coal Company"},"object":{"type":"mine","id":"3608744","name":"Lv #3 Slope"},"validFrom":"1998-08-01","validTo":"2001-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|P23782|1998-08-01|2001-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12954","name":"Larry  Madenford et al"},"object":{"type":"operator","id":"P23782","name":"M & M Anthracite Coal Company"},"validFrom":"1998-08-01","validTo":"2001-01-31","current":false,"derived":true,"evidenceMineId":"3608744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|P23782|1998-08-01|C12954|1997-08-01|88243"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24599","name":"C & L Coal Company"},"object":{"type":"mine","id":"3608744","name":"Lv #3 Slope"},"validFrom":"2001-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|P24599|2001-02-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C16030","name":"Carl  Albert et al"},"object":{"type":"mine","id":"3608744","name":"Lv #3 Slope"},"validFrom":"2001-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|C16030|2001-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C16030","name":"Carl  Albert et al"},"object":{"type":"operator","id":"P24599","name":"C & L Coal Company"},"validFrom":"2001-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|P24599|2001-02-01|C16030|2001-02-01|98143"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C16030","name":"John  Lucas et al"},"object":{"type":"operator","id":"P24599","name":"C & L Coal Company"},"validFrom":"2001-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608744|P24599|2001-02-01|C16030|2001-02-01|98144"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3608744","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"}}