{"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":"1512238","name":"No 4-A"},"operator":{"type":"operator","id":"P12924","name":"Red Dog Coal Corp"},"controller":{"type":"controller","id":"C09514","name":"Ronnie A  Edwards"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05644","name":"Bartley Arnold J"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"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":"1512238|C05644|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10545","name":"O D Coal Company"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1980-02-01","validTo":"1980-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P10545|1980-02-01|1980-06-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08029","name":"Mullins Estill--Otis Davis & Billy Joe Phillips"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1980-02-01","validTo":"1980-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|C08029|1980-02-01|1980-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08029","name":"Mullins Estill--Otis Davis & Billy Joe Phillips"},"object":{"type":"operator","id":"P10545","name":"O D Coal Company"},"validFrom":"1980-02-01","validTo":"1980-06-22","current":false,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P10545|1980-02-01|C08029|1980-02-01|76208"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02613","name":"Mill Branch Mining Company Inc"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1980-06-23","validTo":"1980-06-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P02613|1980-06-23|1980-06-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05644","name":"Bartley Arnold J"},"object":{"type":"operator","id":"P02613","name":"Mill Branch Mining Company Inc"},"validFrom":"1980-06-23","validTo":"1980-06-26","current":false,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P02613|1980-06-23|C05644|1950-01-01|69452"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10704","name":"Coleman & Coleman Mining Company Inc"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1980-06-27","validTo":"1981-07-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P10704|1980-06-27|1981-07-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04185","name":"Brent  Coleman et al"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1980-06-27","validTo":"1981-07-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|C04185|1980-06-27|1981-07-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04185","name":"Brent  Coleman et al"},"object":{"type":"operator","id":"P10704","name":"Coleman & Coleman Mining Company Inc"},"validFrom":"1980-06-27","validTo":"1981-07-23","current":false,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P10704|1980-06-27|C04185|1980-06-27|65035"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12146","name":"M & E Coal Company"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1981-07-24","validTo":"1983-05-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P12146|1981-07-24|1983-05-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09006","name":"Blankenship Mack"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1981-07-24","validTo":"1983-05-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|C09006|1981-07-24|1983-05-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09006","name":"Blankenship Mack"},"object":{"type":"operator","id":"P12146","name":"M & E Coal Company"},"validFrom":"1981-07-24","validTo":"1983-05-12","current":false,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P12146|1981-07-24|C09006|1981-07-24|78646"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09514","name":"Ronnie A  Edwards"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1982-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|C09514|1982-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14432","name":"Ken-Cole Coal Corp"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1983-05-13","validTo":"1987-02-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P14432|1983-05-13|1987-02-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03284","name":"Coleman Dennis S & Shannon"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1983-05-13","validTo":"1987-02-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|C03284|1983-05-13|1987-02-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03284","name":"Coleman Dennis S & Shannon"},"object":{"type":"operator","id":"P14432","name":"Ken-Cole Coal Corp"},"validFrom":"1983-05-13","validTo":"1987-02-04","current":false,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P14432|1983-05-13|C03284|1983-05-13|62394"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12924","name":"Red Dog Coal Corp"},"object":{"type":"mine","id":"1512238","name":"No 4-A"},"validFrom":"1987-02-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P12924|1987-02-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09514","name":"Ronnie A  Edwards"},"object":{"type":"operator","id":"P12924","name":"Red Dog Coal Corp"},"validFrom":"1987-02-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1512238","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512238|P12924|1987-02-05|C09514|1982-01-01|79857"}}],"coverage":{"historyRecords":6,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1512238","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"}}