{"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":"3200949","name":"Pit 1"},"operator":{"type":"operator","id":"0140733","name":"Antelope Creek Trucking, Inc."},"controller":{"type":"controller","id":"0120021","name":"Randy  Byrum; Susan  Byrum"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0122230","name":"Antelope Creek Trucking"},"object":{"type":"mine","id":"3200949","name":"Pit 1"},"validFrom":"2012-04-04","validTo":"2015-09-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0122230|2012-04-04|2015-09-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0103793","name":"Randy  Byrum et al"},"object":{"type":"mine","id":"3200949","name":"Pit 1"},"validFrom":"2012-04-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0103793|2012-04-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0103793","name":"Randy  Byrum et al"},"object":{"type":"operator","id":"0122230","name":"Antelope Creek Trucking"},"validFrom":"2012-04-04","validTo":"2015-09-10","current":false,"derived":true,"evidenceMineId":"3200949","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0122230|2012-04-04|0103793|2012-04-04|17915"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0103793","name":"Ricky John  Helm et al"},"object":{"type":"operator","id":"0122230","name":"Antelope Creek Trucking"},"validFrom":"2012-04-04","validTo":"2015-09-10","current":false,"derived":true,"evidenceMineId":"3200949","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0122230|2012-04-04|0103793|2012-04-04|17916"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0140733","name":"Antelope Creek Trucking, Inc."},"object":{"type":"mine","id":"3200949","name":"Pit 1"},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0140733|2015-09-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0120021","name":"Susan  Byrum et al"},"object":{"type":"mine","id":"3200949","name":"Pit 1"},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0120021|2015-09-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120021","name":"Susan  Byrum et al"},"object":{"type":"operator","id":"0140733","name":"Antelope Creek Trucking, Inc."},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"3200949","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0140733|2015-09-11|0120021|2015-09-11|23380"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120021","name":"Randy  Byrum et al"},"object":{"type":"operator","id":"0140733","name":"Antelope Creek Trucking, Inc."},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"3200949","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3200949|0140733|2015-09-11|0120021|2015-09-11|23381"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3200949","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"}}