{"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":"3609962","name":"F S Lopke-O'Dell Quarry"},"operator":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting 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":"3609962","name":"F S Lopke-O'Dell Quarry"},"validFrom":"1950-01-01","validTo":"2021-01-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|M01415|1950-01-01|2021-01-29"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting Inc."},"object":{"type":"mine","id":"3609962","name":"F S Lopke-O'Dell Quarry"},"validFrom":"2011-10-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|L01583|2011-10-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01415","name":"Frank S  Lopke"},"object":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting Inc."},"validFrom":"2011-10-05","validTo":"2021-01-29","current":false,"derived":true,"evidenceMineId":"3609962","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|L01583|2011-10-05|M01415|1950-01-01|118479"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0163581","name":"Estate of Frank S Lopke"},"object":{"type":"mine","id":"3609962","name":"F S Lopke-O'Dell Quarry"},"validFrom":"2021-01-30","validTo":"2022-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|0163581|2021-01-30|2022-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0163581","name":"Estate of Frank S Lopke"},"object":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting Inc."},"validFrom":"2021-01-30","validTo":"2022-10-31","current":false,"derived":true,"evidenceMineId":"3609962","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|L01583|2011-10-05|0163581|2021-01-30|34297"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0171320","name":"Steven  Gregg et al"},"object":{"type":"mine","id":"3609962","name":"F S Lopke-O'Dell Quarry"},"validFrom":"2022-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|0171320|2022-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171320","name":"Steven  Gregg et al"},"object":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting Inc."},"validFrom":"2022-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609962","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|L01583|2011-10-05|0171320|2022-11-01|36302"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171320","name":"Barbara A Lopke et al"},"object":{"type":"operator","id":"L01583","name":"F. S. Lopke Contracting Inc."},"validFrom":"2022-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609962","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609962|L01583|2011-10-05|0171320|2022-11-01|36303"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609962","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"}}