{"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":"3610240","name":"ALLAN MYERS PORTABLE"},"operator":{"type":"operator","id":"0182013","name":"Allan Myers Materials Inc"},"controller":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2007-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|M08361|2007-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0158595","name":"Allan Myers Inc"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2018-04-13","validTo":"2020-08-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0158595|2018-04-13|2020-08-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2018-04-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|M08361|2018-04-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"operator","id":"0158595","name":"Allan Myers Inc"},"validFrom":"2018-04-13","validTo":"2020-08-05","current":false,"derived":true,"evidenceMineId":"3610240","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0158595|2018-04-13|M08361|2018-04-13|143214"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0080984","name":"Allan Myers Materials"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2020-08-06","validTo":"2022-04-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0080984|2020-08-06|2022-04-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"operator","id":"0080984","name":"Allan Myers Materials"},"validFrom":"2020-08-06","validTo":"2022-04-10","current":false,"derived":true,"evidenceMineId":"3610240","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0080984|2020-08-06|M08361|2007-06-01|143213"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0182013","name":"Allan Myers Materials Inc"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2022-04-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0182013|2022-04-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"mine","id":"3610240","name":"ALLAN MYERS PORTABLE"},"validFrom":"2022-04-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|M08361|2022-04-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08361","name":"A Ross  Myers"},"object":{"type":"operator","id":"0182013","name":"Allan Myers Materials Inc"},"validFrom":"2022-04-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"3610240","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610240|0182013|2022-04-11|M08361|2022-04-11|143215"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3610240","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"}}