{"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":"1002342","name":"Rock Placing Co."},"operator":{"type":"operator","id":"0183795","name":"Rock Placing Co."},"controller":{"type":"controller","id":"0170501","name":"Terry  Frost; Guy  Smith; Marilyn  Frost"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0183795","name":"Rock Placing Co."},"object":{"type":"mine","id":"1002342","name":"Rock Placing Co."},"validFrom":"2022-07-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1002342|0183795|2022-07-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0170501","name":"Terry  Frost et al"},"object":{"type":"mine","id":"1002342","name":"Rock Placing Co."},"validFrom":"2022-07-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1002342|0170501|2022-07-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170501","name":"Terry  Frost et al"},"object":{"type":"operator","id":"0183795","name":"Rock Placing Co."},"validFrom":"2022-07-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"1002342","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1002342|0183795|2022-07-28|0170501|2022-07-28|36119"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170501","name":"Marilyn  Frost et al"},"object":{"type":"operator","id":"0183795","name":"Rock Placing Co."},"validFrom":"2022-07-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"1002342","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1002342|0183795|2022-07-28|0170501|2022-07-28|36120"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170501","name":"Guy  Smith et al"},"object":{"type":"operator","id":"0183795","name":"Rock Placing Co."},"validFrom":"2022-07-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"1002342","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1002342|0183795|2022-07-28|0170501|2022-07-28|36121"}}],"coverage":{"historyRecords":3,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1002342","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"}}