{"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":"1800305","name":"Rosser Pit"},"operator":{"type":"operator","id":"0158554","name":"Marshyhope Operations LLC"},"controller":{"type":"controller","id":"0142703","name":"Steven D  Ward"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04314","name":"J Edwin Rosser Inc"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"1950-01-01","validTo":"1979-10-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|L04314|1950-01-01|1979-10-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03474","name":"Rosser J Edwin"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"1950-01-01","validTo":"1979-10-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|M03474|1950-01-01|1979-10-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03474","name":"Rosser J Edwin"},"object":{"type":"operator","id":"L04314","name":"J Edwin Rosser Inc"},"validFrom":"1950-01-01","validTo":"1979-10-30","current":false,"derived":true,"evidenceMineId":"1800305","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|L04314|1950-01-01|M03474|1950-01-01|129157"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04315","name":"Eastern Corp"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"1979-10-31","validTo":"2002-03-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|L04315|1979-10-31|2002-03-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03475","name":"Simpson George B"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"1979-10-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|M03475|1979-10-31|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03475","name":"Simpson George B"},"object":{"type":"operator","id":"L04315","name":"Eastern Corp"},"validFrom":"1979-10-31","validTo":"2002-03-26","current":false,"derived":true,"evidenceMineId":"1800305","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|L04315|1979-10-31|M03475|1979-10-31|129158"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050656","name":"Marshyhope Sand and Gravel LLC"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"2002-03-27","validTo":"2018-08-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0050656|2002-03-27|2018-08-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040994","name":"Nick T  Russell et al"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"2002-03-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0040994|2002-03-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040994","name":"Nick T  Russell et al"},"object":{"type":"operator","id":"0050656","name":"Marshyhope Sand and Gravel LLC"},"validFrom":"2002-03-27","validTo":"2018-08-06","current":false,"derived":true,"evidenceMineId":"1800305","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0050656|2002-03-27|0040994|2002-03-27|1160"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040994","name":"Monica M  Russell et al"},"object":{"type":"operator","id":"0050656","name":"Marshyhope Sand and Gravel LLC"},"validFrom":"2002-03-27","validTo":"2018-08-06","current":false,"derived":true,"evidenceMineId":"1800305","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0050656|2002-03-27|0040994|2002-03-27|1161"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0158554","name":"Marshyhope Operations LLC"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"2018-08-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0158554|2018-08-07|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0142703","name":"Steven D  Ward"},"object":{"type":"mine","id":"1800305","name":"Rosser Pit"},"validFrom":"2018-08-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0142703|2018-08-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142703","name":"Steven D  Ward"},"object":{"type":"operator","id":"0158554","name":"Marshyhope Operations LLC"},"validFrom":"2018-08-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"1800305","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800305|0158554|2018-08-07|0142703|2018-08-07|28939"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1800305","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"}}