{"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":"0103069","name":"Blaylock Mine"},"operator":{"type":"operator","id":"0053013","name":"M. E. Group, Inc."},"controller":{"type":"controller","id":"0084893","name":"Wes  Calvert"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23394","name":"Marshco Inc"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"1996-03-01","validTo":"1998-05-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1996-03-01|1998-05-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15381","name":"Bostick Marshall"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"1996-03-01","validTo":"2002-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|C15381|1996-03-01|2002-02-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15381","name":"Bostick Marshall"},"object":{"type":"operator","id":"P23394","name":"Marshco Inc"},"validFrom":"1996-03-01","validTo":"1998-05-28","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1996-03-01|C15381|1996-03-01|95441"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03913","name":"John C  Fay Jr"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"1996-11-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|C03913|1996-11-18|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23594","name":"Highland Mining Company Inc"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"1998-05-29","validTo":"1999-06-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23594|1998-05-29|1999-06-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03913","name":"John C  Fay Jr"},"object":{"type":"operator","id":"P23594","name":"Highland Mining Company Inc"},"validFrom":"1998-05-29","validTo":"1999-06-24","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23594|1998-05-29|C03913|1996-11-18|64214"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23394","name":"Marshco Incorporated"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"1999-06-25","validTo":"2004-07-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1999-06-25|2004-07-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15381","name":"Bostick Marshall"},"object":{"type":"operator","id":"P23394","name":"Marshco Incorporated"},"validFrom":"1999-06-25","validTo":"2002-02-25","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1999-06-25|C15381|1996-03-01|95442"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15094","name":"Martha  Mullins"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"2002-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|C15094|2002-02-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15094","name":"Martha  Mullins"},"object":{"type":"operator","id":"P23394","name":"Marshco Inc"},"validFrom":"2002-02-26","validTo":"1998-05-28","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1996-03-01|C15094|2002-02-26|94747"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15094","name":"Martha  Mullins"},"object":{"type":"operator","id":"P23394","name":"Marshco Incorporated"},"validFrom":"2002-02-26","validTo":"2004-07-01","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|P23394|1999-06-25|C15094|2002-02-26|94748"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0053013","name":"M. E. Group, Inc."},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"2004-07-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0053013|2004-07-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043841","name":"Paul M  Whatley"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"2004-07-02","validTo":"2008-03-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0043841|2004-07-02|2008-03-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043841","name":"Paul M  Whatley"},"object":{"type":"operator","id":"0053013","name":"M. E. Group, Inc."},"validFrom":"2004-07-02","validTo":"2008-03-24","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0053013|2004-07-02|0043841|2004-07-02|4846"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0073991","name":"Rodney  Mays"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"2008-03-25","validTo":"2009-05-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0073991|2008-03-25|2009-05-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0073991","name":"Rodney  Mays"},"object":{"type":"operator","id":"0053013","name":"M. E. Group, Inc."},"validFrom":"2008-03-25","validTo":"2009-05-06","current":false,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0053013|2004-07-02|0073991|2008-03-25|11506"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0084893","name":"Wes  Calvert"},"object":{"type":"mine","id":"0103069","name":"Blaylock Mine"},"validFrom":"2009-05-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0084893|2009-05-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0084893","name":"Wes  Calvert"},"object":{"type":"operator","id":"0053013","name":"M. E. Group, Inc."},"validFrom":"2009-05-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"0103069","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103069|0053013|2004-07-02|0084893|2009-05-07|13413"}}],"coverage":{"historyRecords":8,"edgeCount":18,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0103069","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"}}