{"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":"4502777","name":"Collins Pit"},"operator":{"type":"operator","id":"L09858","name":"Collins Road Sand & Gravel Inc"},"controller":{"type":"controller","id":"M07730","name":"Delores A  Afdem"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09857","name":"Collins Road Gravel"},"object":{"type":"mine","id":"4502777","name":"Collins Pit"},"validFrom":"1980-03-01","validTo":"1987-11-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|L09857|1980-03-01|1987-11-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07729","name":"Donald W  Afdem"},"object":{"type":"mine","id":"4502777","name":"Collins Pit"},"validFrom":"1980-03-01","validTo":"1987-11-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|M07729|1980-03-01|1987-11-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07729","name":"Donald W  Afdem"},"object":{"type":"operator","id":"L09857","name":"Collins Road Gravel"},"validFrom":"1980-03-01","validTo":"1987-11-23","current":false,"derived":true,"evidenceMineId":"4502777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|L09857|1980-03-01|M07729|1980-03-01|141837"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09858","name":"Collins Road Sand & Gravel Inc"},"object":{"type":"mine","id":"4502777","name":"Collins Pit"},"validFrom":"1987-11-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|L09858|1987-11-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07730","name":"Delores A  Afdem"},"object":{"type":"mine","id":"4502777","name":"Collins Pit"},"validFrom":"1987-11-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|M07730|1987-11-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07730","name":"Delores A  Afdem"},"object":{"type":"operator","id":"L09858","name":"Collins Road Sand & Gravel Inc"},"validFrom":"1987-11-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"4502777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502777|L09858|1987-11-24|M07730|1987-11-24|141838"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4502777","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"}}