{"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":"2026-10-17T05:35:58.500035+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":"2103543","name":"Okerlund Gravel"},"operator":{"type":"operator","id":"0172253","name":"Okerlund Gravel"},"controller":{"type":"controller","id":"0157161","name":"Jamie E  Okerlund"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0074125","name":"Okerlund Gravel"},"object":{"type":"mine","id":"2103543","name":"Okerlund Gravel"},"validFrom":"2006-06-08","validTo":"2020-08-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|0074125|2006-06-08|2020-08-07"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35586","name":"Les David  Okerlund"},"object":{"type":"mine","id":"2103543","name":"Okerlund Gravel"},"validFrom":"2006-06-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|M35586|2006-06-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35586","name":"Les David  Okerlund"},"object":{"type":"operator","id":"0074125","name":"Okerlund Gravel"},"validFrom":"2006-06-08","validTo":"2020-08-07","current":false,"derived":true,"evidenceMineId":"2103543","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|0074125|2006-06-08|M35586|2006-06-08|164566"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0172253","name":"Okerlund Gravel"},"object":{"type":"mine","id":"2103543","name":"Okerlund Gravel"},"validFrom":"2020-08-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|0172253|2020-08-08|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0157161","name":"Jamie E  Okerlund"},"object":{"type":"mine","id":"2103543","name":"Okerlund Gravel"},"validFrom":"2020-08-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|0157161|2020-08-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0157161","name":"Jamie E  Okerlund"},"object":{"type":"operator","id":"0172253","name":"Okerlund Gravel"},"validFrom":"2020-08-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103543","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2103543|0172253|2020-08-08|0157161|2020-08-08|32543"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2103543","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}