{"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":"4703545","name":"Portable Plant #2"},"operator":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"controller":{"type":"controller","id":"0160841","name":"Daniel C  Ivey; Chase C  Ivey"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01522","name":"Dan C  Ivey et al"},"object":{"type":"mine","id":"4703545","name":"Portable Plant #2"},"validFrom":"1950-01-01","validTo":"2020-10-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|M01522|1950-01-01|2020-10-27"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"object":{"type":"mine","id":"4703545","name":"Portable Plant #2"},"validFrom":"2008-09-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|L01697|2008-09-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01522","name":"Dan C  Ivey et al"},"object":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"validFrom":"2008-09-10","validTo":"2020-10-27","current":false,"derived":true,"evidenceMineId":"4703545","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|L01697|2008-09-10|M01522|1950-01-01|119046"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01522","name":"Bruce P  Ivey et al"},"object":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"validFrom":"2008-09-10","validTo":"2020-10-27","current":false,"derived":true,"evidenceMineId":"4703545","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|L01697|2008-09-10|M01522|1950-01-01|119047"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0160841","name":"Daniel C  Ivey et al"},"object":{"type":"mine","id":"4703545","name":"Portable Plant #2"},"validFrom":"2020-10-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|0160841|2020-10-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0160841","name":"Daniel C  Ivey et al"},"object":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"validFrom":"2020-10-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703545","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|L01697|2008-09-10|0160841|2020-10-28|33579"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0160841","name":"Chase C  Ivey et al"},"object":{"type":"operator","id":"L01697","name":"Ivey Construction Inc"},"validFrom":"2020-10-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703545","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703545|L01697|2008-09-10|0160841|2020-10-28|33580"}}],"coverage":{"historyRecords":4,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4703545","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"}}