{"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":"0301940","name":"Elizabeth Quarry Inc"},"operator":{"type":"operator","id":"0160353","name":"Elizabeth Quarry Inc"},"controller":{"type":"controller","id":"0144561","name":"Chad Rubert  Smith"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0075684","name":"Rocky Ridge Quarry, Inc."},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2006-10-11","validTo":"2015-02-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0075684|2006-10-11|2015-02-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0063551","name":"Delmer  Sanders"},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2006-10-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0063551|2006-10-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0063551","name":"Delmer  Sanders"},"object":{"type":"operator","id":"0075684","name":"Rocky Ridge Quarry, Inc."},"validFrom":"2006-10-11","validTo":"2015-02-01","current":false,"derived":true,"evidenceMineId":"0301940","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0075684|2006-10-11|0063551|2006-10-11|8681"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0137175","name":"Elizabeth Quarry Inc"},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2015-02-02","validTo":"2018-11-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0137175|2015-02-02|2018-11-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0116663","name":"John R  Walker"},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2015-02-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0116663|2015-02-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0116663","name":"John R  Walker"},"object":{"type":"operator","id":"0137175","name":"Elizabeth Quarry Inc"},"validFrom":"2015-02-02","validTo":"2018-11-20","current":false,"derived":true,"evidenceMineId":"0301940","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0137175|2015-02-02|0116663|2015-02-02|22080"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0160353","name":"Elizabeth Quarry Inc"},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2018-11-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0160353|2018-11-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144561","name":"Chad Rubert  Smith"},"object":{"type":"mine","id":"0301940","name":"Elizabeth Quarry Inc"},"validFrom":"2018-11-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0144561|2018-11-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144561","name":"Chad Rubert  Smith"},"object":{"type":"operator","id":"0160353","name":"Elizabeth Quarry Inc"},"validFrom":"2018-11-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"0301940","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301940|0160353|2018-11-21|0144561|2018-11-21|29529"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0301940","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"}}