{"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":"3601860","name":"Tracy Slope"},"operator":{"type":"operator","id":"P06410","name":"Lucas & Partners Coal Company"},"controller":{"type":"controller","id":"C05324","name":"Lucas Gary"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05493","name":"Herring Bros & Lucas Coal Company"},"object":{"type":"mine","id":"3601860","name":"Tracy Slope"},"validFrom":"1950-01-01","validTo":"1977-03-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|P05493|1950-01-01|1977-03-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04566","name":"Lucas Ray & Lester Herring"},"object":{"type":"mine","id":"3601860","name":"Tracy Slope"},"validFrom":"1950-01-01","validTo":"1977-03-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|C04566|1950-01-01|1977-03-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04566","name":"Lucas Ray & Lester Herring"},"object":{"type":"operator","id":"P05493","name":"Herring Bros & Lucas Coal Company"},"validFrom":"1950-01-01","validTo":"1977-03-27","current":false,"derived":true,"evidenceMineId":"3601860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|P05493|1950-01-01|C04566|1950-01-01|66217"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06410","name":"Lucas & Partners Coal Company"},"object":{"type":"mine","id":"3601860","name":"Tracy Slope"},"validFrom":"1977-03-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|P06410|1977-03-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05324","name":"Lucas Gary Et Al"},"object":{"type":"mine","id":"3601860","name":"Tracy Slope"},"validFrom":"1977-03-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|C05324|1977-03-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05324","name":"Lucas Gary Et Al"},"object":{"type":"operator","id":"P06410","name":"Lucas & Partners Coal Company"},"validFrom":"1977-03-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"3601860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3601860|P06410|1977-03-28|C05324|1977-03-28|68396"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3601860","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"}}