{"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":"1516971","name":"Highsplint No 1"},"operator":{"type":"operator","id":"P14483","name":"Cloverfork Mining & Excavating Inc"},"controller":{"type":"controller","id":"C00015","name":"Benjamin R.  Bennett"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00015","name":"Benjamin R.  Bennett"},"object":{"type":"mine","id":"1516971","name":"Highsplint No 1"},"validFrom":"1981-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|C00015|1981-11-03|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21140","name":"Louis Hamilton Coal Company"},"object":{"type":"mine","id":"1516971","name":"Highsplint No 1"},"validFrom":"1990-09-01","validTo":"1991-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|P21140|1990-09-01|1991-07-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14240","name":"Hamilton Louis"},"object":{"type":"mine","id":"1516971","name":"Highsplint No 1"},"validFrom":"1990-09-01","validTo":"1991-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|C14240|1990-09-01|1991-07-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14240","name":"Hamilton Louis"},"object":{"type":"operator","id":"P21140","name":"Louis Hamilton Coal Company"},"validFrom":"1990-09-01","validTo":"1991-07-09","current":false,"derived":true,"evidenceMineId":"1516971","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|P21140|1990-09-01|C14240|1990-09-01|92293"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14483","name":"Cloverfork Mining & Excavating Inc"},"object":{"type":"mine","id":"1516971","name":"Highsplint No 1"},"validFrom":"1991-07-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|P14483|1991-07-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00015","name":"Benjamin R.  Bennett"},"object":{"type":"operator","id":"P14483","name":"Cloverfork Mining & Excavating Inc"},"validFrom":"1991-07-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516971","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516971|P14483|1991-07-10|C00015|1981-11-03|43551"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516971","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"}}