{"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":"4202205","name":"Portable #1"},"operator":{"type":"operator","id":"0103345","name":"Highline Sand & Gravel"},"controller":{"type":"controller","id":"0117403","name":"Ronnie D Hunt"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15931","name":"Taylor Landscaping"},"object":{"type":"mine","id":"4202205","name":"Portable #1"},"validFrom":"1998-06-01","validTo":"2009-08-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|L15931|1998-06-01|2009-08-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12144","name":"Kerry  Taylor"},"object":{"type":"mine","id":"4202205","name":"Portable #1"},"validFrom":"1998-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|M12144|1998-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12144","name":"Kerry  Taylor"},"object":{"type":"operator","id":"L15931","name":"Taylor Landscaping"},"validFrom":"1998-06-01","validTo":"2009-08-18","current":false,"derived":true,"evidenceMineId":"4202205","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|L15931|1998-06-01|M12144|1998-06-01|153163"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0103345","name":"Highline Sand & Gravel"},"object":{"type":"mine","id":"4202205","name":"Portable #1"},"validFrom":"2009-08-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|0103345|2009-08-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0087415","name":"Ron L  Moosman et al"},"object":{"type":"mine","id":"4202205","name":"Portable #1"},"validFrom":"2009-08-19","validTo":"2014-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|0087415|2009-08-19|2014-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0087415","name":"Ron L  Moosman et al"},"object":{"type":"operator","id":"0103345","name":"Highline Sand & Gravel"},"validFrom":"2009-08-19","validTo":"2014-09-30","current":false,"derived":true,"evidenceMineId":"4202205","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|0103345|2009-08-19|0087415|2009-08-19|14069"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0117403","name":"Ronnie D Hunt"},"object":{"type":"mine","id":"4202205","name":"Portable #1"},"validFrom":"2014-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|0117403|2014-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0117403","name":"Ronnie D Hunt"},"object":{"type":"operator","id":"0103345","name":"Highline Sand & Gravel"},"validFrom":"2014-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202205","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202205|0103345|2009-08-19|0117403|2014-10-01|22297"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4202205","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"}}