{"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":"2026-10-17T05:35:58.500035+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":"1512225","name":"No 1"},"operator":{"type":"operator","id":"P15305","name":"Shevon Coal Inc"},"controller":{"type":"controller","id":"C11015","name":"Hill Zelma"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01312","name":"Smith Sam B"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1975-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|C01312|1975-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13207","name":"Rock Bottom Coal Company"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1980-02-01","validTo":"1983-03-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P13207|1980-02-01|1983-03-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05527","name":"Senters Harold & Clarence Senters Et Al"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1980-02-01","validTo":"1984-02-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|C05527|1980-02-01|1984-02-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05527","name":"Senters Harold & Clarence Senters Et Al"},"object":{"type":"operator","id":"P13207","name":"Rock Bottom Coal Company"},"validFrom":"1980-02-01","validTo":"1983-03-20","current":false,"derived":true,"evidenceMineId":"1512225","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P13207|1980-02-01|C05527|1980-02-01|69047"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01525","name":"S H & W Coals Inc"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1983-03-21","validTo":"1984-02-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P01525|1983-03-21|1984-02-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01312","name":"Smith Sam B"},"object":{"type":"operator","id":"P01525","name":"S H & W Coals Inc"},"validFrom":"1983-03-21","validTo":"1984-02-14","current":false,"derived":true,"evidenceMineId":"1512225","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P01525|1983-03-21|C01312|1975-06-01|53457"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15305","name":"Shevon Coal Inc"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1984-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P15305|1984-02-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11015","name":"Hill Zelma"},"object":{"type":"mine","id":"1512225","name":"No 1"},"validFrom":"1984-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|C11015|1984-02-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11015","name":"Hill Zelma"},"object":{"type":"operator","id":"P15305","name":"Shevon Coal Inc"},"validFrom":"1984-02-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"1512225","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512225|P15305|1984-02-15|C11015|1984-02-15|83432"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1512225","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}