{"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":"0100010","name":"Rockwood Mine"},"operator":{"type":"operator","id":"L16123","name":"Alabama Stone Company"},"controller":{"type":"controller","id":"M01727","name":"Ron J Vetter; Donn J Vetter"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05566","name":"Alabama Limestone Inc"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1950-01-01","validTo":"1990-04-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L05566|1950-01-01|1990-04-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04492","name":"Robert I  Rogers"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1950-01-01","validTo":"1990-04-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|M04492|1950-01-01|1990-04-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04492","name":"Robert I  Rogers"},"object":{"type":"operator","id":"L05566","name":"Alabama Limestone Inc"},"validFrom":"1950-01-01","validTo":"1990-04-14","current":false,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L05566|1950-01-01|M04492|1950-01-01|132093"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11629","name":"Alabama Limetone Inc"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1990-04-15","validTo":"1992-03-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L11629|1990-04-15|1992-03-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07884","name":"Eugene G  Rosenthal"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1990-04-15","validTo":"1992-03-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|M07884|1990-04-15|1992-03-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07884","name":"Eugene G  Rosenthal"},"object":{"type":"operator","id":"L11629","name":"Alabama Limetone Inc"},"validFrom":"1990-04-15","validTo":"1992-03-25","current":false,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L11629|1990-04-15|M07884|1990-04-15|142152"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12590","name":"Alabama Limestone Company Ltd"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1992-03-26","validTo":"1994-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L12590|1992-03-26|1994-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09648","name":"David  Teitelbaum  et al"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1992-03-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|M09648|1992-03-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09648","name":"David  Teitelbaum  et al"},"object":{"type":"operator","id":"L12590","name":"Alabama Limestone Company Ltd"},"validFrom":"1992-03-26","validTo":"1994-09-30","current":false,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L12590|1992-03-26|M09648|1992-03-26|146871"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14477","name":"Alabama Cut Stone Inc"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1994-10-01","validTo":"1998-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L14477|1994-10-01|1998-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04492","name":"Robert I  Rogers"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1994-10-01","validTo":"1998-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|M04492|1994-10-01|1998-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04492","name":"Robert I  Rogers"},"object":{"type":"operator","id":"L14477","name":"Alabama Cut Stone Inc"},"validFrom":"1994-10-01","validTo":"1998-06-30","current":false,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L14477|1994-10-01|M04492|1994-10-01|132096"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16123","name":"Alabama Stone Company"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1998-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L16123|1998-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01727","name":"Ron J Vetter et al"},"object":{"type":"mine","id":"0100010","name":"Rockwood Mine"},"validFrom":"1998-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|M01727|1998-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01727","name":"Ron J Vetter et al"},"object":{"type":"operator","id":"L16123","name":"Alabama Stone Company"},"validFrom":"1998-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L16123|1998-07-01|M01727|1998-07-01|120626"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01727","name":"Donn J Vetter et al"},"object":{"type":"operator","id":"L16123","name":"Alabama Stone Company"},"validFrom":"1998-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0100010","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100010|L16123|1998-07-01|M01727|1998-07-01|120627"}}],"coverage":{"historyRecords":6,"edgeCount":16,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0100010","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"}}