{"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":"3003780","name":"Stedman Crusher Unit # PC021 s/n:D3257"},"operator":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"controller":{"type":"controller","id":"0171320","name":"Steven  Gregg; Barbara A Lopke"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01415","name":"Frank S  Lopke"},"object":{"type":"mine","id":"3003780","name":"Stedman Crusher Unit # PC021 s/n:D3257"},"validFrom":"2009-06-01","validTo":"2021-01-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|M01415|2009-06-01|2021-01-29"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"object":{"type":"mine","id":"3003780","name":"Stedman Crusher Unit # PC021 s/n:D3257"},"validFrom":"2011-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0101865|2011-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01415","name":"Frank S  Lopke"},"object":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"validFrom":"2011-06-01","validTo":"2021-01-29","current":false,"derived":true,"evidenceMineId":"3003780","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0101865|2011-06-01|M01415|2009-06-01|118489"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0163581","name":"Estate of Frank S Lopke"},"object":{"type":"mine","id":"3003780","name":"Stedman Crusher Unit # PC021 s/n:D3257"},"validFrom":"2021-01-30","validTo":"2022-08-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0163581|2021-01-30|2022-08-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0163581","name":"Estate of Frank S Lopke"},"object":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"validFrom":"2021-01-30","validTo":"2022-08-14","current":false,"derived":true,"evidenceMineId":"3003780","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0101865|2011-06-01|0163581|2021-01-30|34280"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0171320","name":"Barbara A Lopke et al"},"object":{"type":"mine","id":"3003780","name":"Stedman Crusher Unit # PC021 s/n:D3257"},"validFrom":"2022-08-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0171320|2022-08-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171320","name":"Barbara A Lopke et al"},"object":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"validFrom":"2022-08-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3003780","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0101865|2011-06-01|0171320|2022-08-15|36268"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171320","name":"Steven  Gregg et al"},"object":{"type":"operator","id":"0101865","name":"Lopke Quarries, Inc."},"validFrom":"2022-08-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3003780","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003780|0101865|2011-06-01|0171320|2022-08-15|36269"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3003780","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"}}