{"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":"1516554","name":"B & D #2"},"operator":{"type":"operator","id":"P24720","name":"B & D Mining LLC"},"controller":{"type":"controller","id":"C12998","name":"Stanley R  Ditty"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12763","name":"Great Western Resources Inc"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1987-02-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|C12763|1987-02-04|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18306","name":"Harlan Fuel Company"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1988-12-01","validTo":"1995-08-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P18306|1988-12-01|1995-08-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12763","name":"Great Western Resources Inc"},"object":{"type":"operator","id":"P18306","name":"Harlan Fuel Company"},"validFrom":"1988-12-01","validTo":"1995-08-14","current":false,"derived":true,"evidenceMineId":"1516554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P18306|1988-12-01|C12763|1987-02-04|87849"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23213","name":"Harlan Fuel Company"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1995-08-15","validTo":"1996-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P23213|1995-08-15|1996-06-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14870","name":"George E  Barker"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1995-08-15","validTo":"2001-07-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|C14870|1995-08-15|2001-07-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14870","name":"George E  Barker"},"object":{"type":"operator","id":"P23213","name":"Harlan Fuel Company"},"validFrom":"1995-08-15","validTo":"1996-06-14","current":false,"derived":true,"evidenceMineId":"1516554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P23213|1995-08-15|C14870|1995-08-15|94121"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23703","name":"Harlan Fuel Company"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1996-06-15","validTo":"2001-10-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P23703|1996-06-15|2001-10-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15090","name":"Goddess Coal Corp LLC"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"1996-06-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|C15090|1996-06-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15090","name":"Goddess Coal Corp LLC"},"object":{"type":"operator","id":"P23703","name":"Harlan Fuel Company"},"validFrom":"1996-06-15","validTo":"2001-10-01","current":false,"derived":true,"evidenceMineId":"1516554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P23703|1996-06-15|C15090|1996-06-15|94735"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12998","name":"Stanley R  Ditty"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"2001-07-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|C12998|2001-07-30|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24720","name":"B & D Mining LLC"},"object":{"type":"mine","id":"1516554","name":"B & D #2"},"validFrom":"2001-10-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P24720|2001-10-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12998","name":"Stanley R  Ditty"},"object":{"type":"operator","id":"P24720","name":"B & D Mining LLC"},"validFrom":"2001-10-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516554|P24720|2001-10-02|C12998|2001-07-30|88361"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516554","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"}}