{"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":"3102155","name":"H A Lathan Pit"},"operator":{"type":"operator","id":"L05828","name":"Barnhill Contracting Company"},"controller":{"type":"controller","id":"M00128","name":"Barnhill Contracting Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|M00049|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00128","name":"Barnhill Contracting Company"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|M00128|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04849","name":"Apac-Carolina Inc"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"2001-04-01","validTo":"2003-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|L04849|2001-04-01|2003-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"operator","id":"L04849","name":"Apac-Carolina Inc"},"validFrom":"2001-04-01","validTo":"2003-03-31","current":false,"derived":true,"evidenceMineId":"3102155","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|L04849|2001-04-01|M00049|1950-01-01|102786"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051196","name":"Apac-Atlantic Inc Coastal Carolina Division"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"2003-04-01","validTo":"2007-01-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|0051196|2003-04-01|2007-01-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"2003-04-01","validTo":"2006-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|M00049|2003-04-01|2006-08-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"operator","id":"0051196","name":"Apac-Atlantic Inc Coastal Carolina Division"},"validFrom":"2003-04-01","validTo":"2006-08-27","current":false,"derived":true,"evidenceMineId":"3102155","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|0051196|2003-04-01|M00049|2003-04-01|102930"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"2006-08-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|M06183|2006-08-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"0051196","name":"Apac-Atlantic Inc Coastal Carolina Division"},"validFrom":"2006-08-28","validTo":"2007-01-24","current":false,"derived":true,"evidenceMineId":"3102155","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|0051196|2003-04-01|M06183|2006-08-28|137334"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05828","name":"Barnhill Contracting Company"},"object":{"type":"mine","id":"3102155","name":"H A Lathan Pit"},"validFrom":"2007-01-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|L05828|2007-01-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00128","name":"Barnhill Contracting Company"},"object":{"type":"operator","id":"L05828","name":"Barnhill Contracting Company"},"validFrom":"2007-01-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102155","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102155|L05828|2007-01-25|M00128|1950-01-01|104799"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3102155","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"}}