{"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":"4406917","name":"#8 Mine"},"operator":{"type":"operator","id":"P16825","name":"Sigmon Coal Company, Inc."},"controller":{"type":"controller","id":"C00510","name":"James A  Sigmon"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00510","name":"James A  Sigmon"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1985-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|C00510|1985-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00706","name":"Theodore  Yates et al"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1989-02-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|C00706|1989-02-21|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23980","name":"Sigmon Energy Llc"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1998-07-01","validTo":"1999-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P23980|1998-07-01|1999-06-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00510","name":"James A  Sigmon"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1998-07-01","validTo":"1999-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|C00510|1998-07-01|1999-06-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00510","name":"James A  Sigmon"},"object":{"type":"operator","id":"P23980","name":"Sigmon Energy Llc"},"validFrom":"1998-07-01","validTo":"1999-06-22","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P23980|1998-07-01|C00510|1998-07-01|47652"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12998","name":"Stanley R  Ditty"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1999-03-01","validTo":"2001-09-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|C12998|1999-03-01|2001-09-17"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24103","name":"Brandon Enterprises Llc"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"1999-06-23","validTo":"2001-09-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P24103|1999-06-23|2001-09-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12998","name":"Stanley R  Ditty"},"object":{"type":"operator","id":"P24103","name":"Brandon Enterprises Llc"},"validFrom":"1999-06-23","validTo":"2001-09-17","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P24103|1999-06-23|C12998|1999-03-01|88359"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24727","name":"Border Mining Inc"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2001-09-18","validTo":"2002-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P24727|2001-09-18|2002-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C16100","name":"Suzie  Fought"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2001-09-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|C16100|2001-09-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C16100","name":"Suzie  Fought"},"object":{"type":"operator","id":"P24727","name":"Border Mining Inc"},"validFrom":"2001-09-18","validTo":"2002-03-31","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P24727|2001-09-18|C16100|2001-09-18|98399"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20052","name":"Har-Lee Coal Co., Inc."},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2002-04-01","validTo":"2004-08-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P20052|2002-04-01|2004-08-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00706","name":"Theodore  Yates et al"},"object":{"type":"operator","id":"P20052","name":"Har-Lee Coal Co., Inc."},"validFrom":"2002-04-01","validTo":"2004-08-09","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P20052|2002-04-01|C00706|1989-02-21|49508"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0044001","name":"Ralph  Napier et al"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2004-07-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|0044001|2004-07-07|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0053173","name":"Harlan Fuel Co LLC"},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2004-08-10","validTo":"2006-01-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|0053173|2004-08-10|2006-01-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0044001","name":"Ralph  Napier et al"},"object":{"type":"operator","id":"0053173","name":"Harlan Fuel Co LLC"},"validFrom":"2004-08-10","validTo":"2006-01-04","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|0053173|2004-08-10|0044001|2004-07-07|4888"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0044001","name":"Connie  Napier  et al"},"object":{"type":"operator","id":"0053173","name":"Harlan Fuel Co LLC"},"validFrom":"2004-08-10","validTo":"2006-01-04","current":false,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|0053173|2004-08-10|0044001|2004-07-07|4889"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16825","name":"Sigmon Coal Company, Inc."},"object":{"type":"mine","id":"4406917","name":"#8 Mine"},"validFrom":"2006-01-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P16825|2006-01-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00510","name":"James A  Sigmon"},"object":{"type":"operator","id":"P16825","name":"Sigmon Coal Company, Inc."},"validFrom":"2006-01-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"4406917","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406917|P16825|2006-01-05|C00510|1985-07-01|47646"}}],"coverage":{"historyRecords":7,"edgeCount":19,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4406917","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"}}