{"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":"2301861","name":"Doss & Harper Stone"},"operator":{"type":"operator","id":"L00263","name":"Doss & Harper Stone Company"},"controller":{"type":"controller","id":"M00212","name":"Betty L  Harper"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00212","name":"Betty L  Harper"},"object":{"type":"mine","id":"2301861","name":"Doss & Harper Stone"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|M00212|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07481","name":"Inman Sand & Gravel Company"},"object":{"type":"mine","id":"2301861","name":"Doss & Harper Stone"},"validFrom":"1981-07-01","validTo":"1984-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|L07481|1981-07-01|1984-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05946","name":"Inman Sand & Gravel Company"},"object":{"type":"mine","id":"2301861","name":"Doss & Harper Stone"},"validFrom":"1981-07-01","validTo":"1984-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|M05946|1981-07-01|1984-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05946","name":"Inman Sand & Gravel Company"},"object":{"type":"operator","id":"L07481","name":"Inman Sand & Gravel Company"},"validFrom":"1981-07-01","validTo":"1984-05-31","current":false,"derived":true,"evidenceMineId":"2301861","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|L07481|1981-07-01|M05946|1981-07-01|135820"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00263","name":"Doss & Harper Stone Company"},"object":{"type":"mine","id":"2301861","name":"Doss & Harper Stone"},"validFrom":"1984-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|L00263|1984-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00212","name":"Betty L  Harper"},"object":{"type":"operator","id":"L00263","name":"Doss & Harper Stone Company"},"validFrom":"1984-06-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2301861","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301861|L00263|1984-06-01|M00212|1950-01-01|107461"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2301861","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"}}