{"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":"5100224","name":"Portable Plant"},"operator":{"type":"operator","id":"0051342","name":"Pacific Aggregate"},"controller":{"type":"controller","id":"0177761","name":"Deborah A  Wilderman"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"1985-10-01","validTo":"2023-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|M09717|1985-10-01|2023-05-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08811","name":"Hawaiian Cement"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"1997-03-01","validTo":"1998-02-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|L08811|1997-03-01|1998-02-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"operator","id":"L08811","name":"Hawaiian Cement"},"validFrom":"1997-03-01","validTo":"1998-02-10","current":false,"derived":true,"evidenceMineId":"5100224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|L08811|1997-03-01|M09717|1985-10-01|147020"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15684","name":"Industrial Parts Hawaii Inc"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"1998-02-11","validTo":"2003-03-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|L15684|1998-02-11|2003-03-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11959","name":"Lawrence E  Wilderman"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"1998-02-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|M11959|1998-02-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11959","name":"Lawrence E  Wilderman"},"object":{"type":"operator","id":"L15684","name":"Industrial Parts Hawaii Inc"},"validFrom":"1998-02-11","validTo":"2003-03-10","current":false,"derived":true,"evidenceMineId":"5100224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|L15684|1998-02-11|M11959|1998-02-11|152812"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051342","name":"Pacific Aggregate"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"2003-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|0051342|2003-03-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11959","name":"Lawrence E  Wilderman"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"2003-03-11","validTo":"2021-09-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|M11959|2003-03-11|2021-09-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11959","name":"Lawrence E  Wilderman"},"object":{"type":"operator","id":"0051342","name":"Pacific Aggregate"},"validFrom":"2003-03-11","validTo":"2021-09-05","current":false,"derived":true,"evidenceMineId":"5100224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|0051342|2003-03-11|M11959|2003-03-11|152814"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0177761","name":"Deborah A  Wilderman"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"2021-09-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|0177761|2021-09-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0177761","name":"Deborah A  Wilderman"},"object":{"type":"operator","id":"0051342","name":"Pacific Aggregate"},"validFrom":"2021-09-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"5100224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|0051342|2003-03-11|0177761|2021-09-06|38105"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0176802","name":"Knife River Corporation"},"object":{"type":"mine","id":"5100224","name":"Portable Plant"},"validFrom":"2023-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|0176802|2023-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0176802","name":"Knife River Corporation"},"object":{"type":"operator","id":"L08811","name":"Hawaiian Cement"},"validFrom":"2023-06-01","validTo":"1998-02-10","current":false,"derived":true,"evidenceMineId":"5100224","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100224|L08811|1997-03-01|0176802|2023-06-01|37900"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5100224","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"}}