{"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":"2102623","name":"PORTABLE CRUSHER"},"operator":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"controller":{"type":"controller","id":"0185482","name":"Schulke Family Trust; Eric  Schulke; Kyle  Schulke"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09721","name":"Davidson Construction"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"1978-03-09","validTo":"1987-06-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09721|1978-03-09|1987-06-17"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07615","name":"Ronald D  Davidson"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"1978-03-09","validTo":"2025-07-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|M07615|1978-03-09|2025-07-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07615","name":"Ronald D  Davidson"},"object":{"type":"operator","id":"L09721","name":"Davidson Construction"},"validFrom":"1978-03-09","validTo":"1987-06-17","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09721|1978-03-09|M07615|1978-03-09|141624"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09722","name":"M & J Construction"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"1987-06-18","validTo":"2001-03-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09722|1987-06-18|2001-03-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07616","name":"Myron  Olberg"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"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":"2102623|M07616|1987-06-18|2013-10-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07616","name":"Myron  Olberg"},"object":{"type":"operator","id":"L09722","name":"M & J Construction"},"validFrom":"1987-06-18","validTo":"2001-03-05","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09722|1987-06-18|M07616|1987-06-18|141628"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"2001-03-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L18256|2001-03-06|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M14035","name":"Rick  Schulke"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"2001-03-06","validTo":"2024-06-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|M14035|2001-03-06|2024-06-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M14035","name":"Rick  Schulke"},"object":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"validFrom":"2001-03-06","validTo":"2024-06-05","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L18256|2001-03-06|M14035|2001-03-06|157353"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111025","name":"Sharron  Olberg et al"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"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":"2102623|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"},"validFrom":"2013-10-21","validTo":"2001-03-05","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09722|1987-06-18|0111025|2013-10-21|20398"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111025","name":"Jeffrey  Olberg et al"},"object":{"type":"operator","id":"L09722","name":"M & J Construction"},"validFrom":"2013-10-21","validTo":"2001-03-05","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09722|1987-06-18|0111025|2013-10-21|20399"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0185482","name":"Schulke Family Trust et al"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"2024-06-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|0185482|2024-06-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185482","name":"Schulke Family Trust et al"},"object":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"validFrom":"2024-06-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L18256|2001-03-06|0185482|2024-06-06|39565"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185482","name":"Eric  Schulke et al"},"object":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"validFrom":"2024-06-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L18256|2001-03-06|0185482|2024-06-06|39566"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185482","name":"Kyle  Schulke et al"},"object":{"type":"operator","id":"L18256","name":"NORTHERN AGGREGATE INC."},"validFrom":"2024-06-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L18256|2001-03-06|0185482|2024-06-06|39567"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0194541","name":"Ronald  Davidson et al"},"object":{"type":"mine","id":"2102623","name":"PORTABLE CRUSHER"},"validFrom":"2025-07-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|0194541|2025-07-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0194541","name":"Ronald  Davidson et al"},"object":{"type":"operator","id":"L09721","name":"Davidson Construction"},"validFrom":"2025-07-16","validTo":"1987-06-17","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09721|1978-03-09|0194541|2025-07-16|41579"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0194541","name":"Kevin  Davidson et al"},"object":{"type":"operator","id":"L09721","name":"Davidson Construction"},"validFrom":"2025-07-16","validTo":"1987-06-17","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09721|1978-03-09|0194541|2025-07-16|41580"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0194541","name":"Kim  Davidson et al"},"object":{"type":"operator","id":"L09721","name":"Davidson Construction"},"validFrom":"2025-07-16","validTo":"1987-06-17","current":false,"derived":true,"evidenceMineId":"2102623","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102623|L09721|1978-03-09|0194541|2025-07-16|41581"}}],"coverage":{"historyRecords":11,"edgeCount":20,"intervalAnomalies":5,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2102623","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"}}