{"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":"3200162","name":"Portable Unit #5"},"operator":{"type":"operator","id":"L17032","name":"Farden Construction Inc"},"controller":{"type":"controller","id":"M10052","name":"Steve  Farden"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09501","name":"Don Harris Gravel Company Inc"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"1950-01-01","validTo":"1987-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L09501|1950-01-01|1987-05-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07455","name":"Donald  Harris"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"1950-01-01","validTo":"1987-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|M07455|1950-01-01|1987-05-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07455","name":"Donald  Harris"},"object":{"type":"operator","id":"L09501","name":"Don Harris Gravel Company Inc"},"validFrom":"1950-01-01","validTo":"1987-05-10","current":false,"derived":true,"evidenceMineId":"3200162","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L09501|1950-01-01|M07455|1950-01-01|141309"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09502","name":"Harris Graveling Inc"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"1987-05-11","validTo":"2013-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L09502|1987-05-11|2013-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07456","name":"Kirk J  Harris et al"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"1987-05-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|M07456|1987-05-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07456","name":"Kirk J  Harris et al"},"object":{"type":"operator","id":"L09502","name":"Harris Graveling Inc"},"validFrom":"1987-05-11","validTo":"2013-12-31","current":false,"derived":true,"evidenceMineId":"3200162","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L09502|1987-05-11|M07456|1987-05-11|141310"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07456","name":"Timothy A  Harris et al"},"object":{"type":"operator","id":"L09502","name":"Harris Graveling Inc"},"validFrom":"1987-05-11","validTo":"2013-12-31","current":false,"derived":true,"evidenceMineId":"3200162","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L09502|1987-05-11|M07456|1987-05-11|141311"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10052","name":"Steve  Farden et al"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"1993-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|M10052|1993-07-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17032","name":"Farden Construction Inc"},"object":{"type":"mine","id":"3200162","name":"Portable Unit #5"},"validFrom":"2014-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L17032|2014-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10052","name":"Steve  Farden et al"},"object":{"type":"operator","id":"L17032","name":"Farden Construction Inc"},"validFrom":"2014-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3200162","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200162|L17032|2014-01-01|M10052|1993-07-01|148263"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3200162","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"}}