{"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":"2103166","name":"Jeff's Plant"},"operator":{"type":"operator","id":"L09722","name":"M & J Construction of Holt, Inc."},"controller":{"type":"controller","id":"0111025","name":"Sharron  Olberg; Jeffrey  Olberg"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07616","name":"Myron  Olberg"},"object":{"type":"mine","id":"2103166","name":"Jeff's Plant"},"validFrom":"1987-06-18","validTo":"2013-10-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|M07616|1987-06-18|2013-10-20"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09722","name":"M & J Construction of Holt, Inc."},"object":{"type":"mine","id":"2103166","name":"Jeff's Plant"},"validFrom":"1998-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|L09722|1998-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07616","name":"Myron  Olberg"},"object":{"type":"operator","id":"L09722","name":"M & J Construction of Holt, Inc."},"validFrom":"1998-06-01","validTo":"2013-10-20","current":false,"derived":true,"evidenceMineId":"2103166","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|L09722|1998-06-01|M07616|1987-06-18|141629"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111025","name":"Sharron  Olberg et al"},"object":{"type":"mine","id":"2103166","name":"Jeff's Plant"},"validFrom":"2013-10-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|0111025|2013-10-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111025","name":"Sharron  Olberg et al"},"object":{"type":"operator","id":"L09722","name":"M & J Construction of Holt, Inc."},"validFrom":"2013-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103166","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|L09722|1998-06-01|0111025|2013-10-21|20400"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111025","name":"Jeffrey  Olberg et al"},"object":{"type":"operator","id":"L09722","name":"M & J Construction of Holt, Inc."},"validFrom":"2013-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103166","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103166|L09722|1998-06-01|0111025|2013-10-21|20401"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2103166","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"}}