{"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":"0201201","name":"GEORGIA MARBLE COMPANY"},"operator":{"type":"operator","id":"L10960","name":"Georgia Marble Company"},"controller":{"type":"controller","id":"M11763","name":"Imerys S A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00883","name":"Andrada Marble Company Inc"},"object":{"type":"mine","id":"0201201","name":"GEORGIA MARBLE COMPANY"},"validFrom":"1950-01-01","validTo":"1991-03-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|L00883|1950-01-01|1991-03-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00743","name":"Hartley David C"},"object":{"type":"mine","id":"0201201","name":"GEORGIA MARBLE COMPANY"},"validFrom":"1950-01-01","validTo":"1991-03-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|M00743|1950-01-01|1991-03-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00743","name":"Hartley David C"},"object":{"type":"operator","id":"L00883","name":"Andrada Marble Company Inc"},"validFrom":"1950-01-01","validTo":"1991-03-24","current":false,"derived":true,"evidenceMineId":"0201201","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|L00883|1950-01-01|M00743|1950-01-01|114590"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"mine","id":"0201201","name":"GEORGIA MARBLE COMPANY"},"validFrom":"1989-05-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|M11763|1989-05-31|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10960","name":"Georgia Marble Company"},"object":{"type":"mine","id":"0201201","name":"GEORGIA MARBLE COMPANY"},"validFrom":"1991-03-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|L10960|1991-03-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"L10960","name":"Georgia Marble Company"},"validFrom":"1991-03-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"0201201","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0201201|L10960|1991-03-25|M11763|1989-05-31|152215"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0201201","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"}}