{"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":"1518478","name":"Apex  Materials, LLC"},"operator":{"type":"operator","id":"0122130","name":"Apex Materials, LLC"},"controller":{"type":"controller","id":"0103733","name":"Roger D  Meuth"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050048","name":"Apex Quarry LLC"},"object":{"type":"mine","id":"1518478","name":"Apex  Materials, LLC"},"validFrom":"2001-11-12","validTo":"2012-04-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0050048|2001-11-12|2012-04-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040500","name":"Todd  Harris"},"object":{"type":"mine","id":"1518478","name":"Apex  Materials, LLC"},"validFrom":"2001-11-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0040500|2001-11-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040500","name":"Todd  Harris"},"object":{"type":"operator","id":"0050048","name":"Apex Quarry LLC"},"validFrom":"2001-11-12","validTo":"2012-04-05","current":false,"derived":true,"evidenceMineId":"1518478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0050048|2001-11-12|0040500|2001-11-12|88"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0122130","name":"Apex Materials, LLC"},"object":{"type":"mine","id":"1518478","name":"Apex  Materials, LLC"},"validFrom":"2012-04-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0122130|2012-04-06|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0103733","name":"Roger D  Meuth"},"object":{"type":"mine","id":"1518478","name":"Apex  Materials, LLC"},"validFrom":"2012-04-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0103733|2012-04-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0103733","name":"Roger D  Meuth"},"object":{"type":"operator","id":"0122130","name":"Apex Materials, LLC"},"validFrom":"2012-04-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518478|0122130|2012-04-06|0103733|2012-04-06|17898"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1518478","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"}}