{"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":"4002747","name":"Weststar Coal Co"},"operator":{"type":"operator","id":"P19941","name":"Weststar Coal Company Inc"},"controller":{"type":"controller","id":"C12389","name":"Maggard Carlos J"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00744","name":"Harris Johnny"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"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":"4002747|C00744|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1981-09-01","validTo":"1985-10-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P00869|1981-09-01|1985-10-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00744","name":"Harris Johnny"},"object":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"validFrom":"1981-09-01","validTo":"1985-10-06","current":false,"derived":true,"evidenceMineId":"4002747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P00869|1981-09-01|C00744|1950-01-01|49728"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17126","name":"S-J Coal Company"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1985-10-07","validTo":"1985-11-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P17126|1985-10-07|1985-11-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12082","name":"Bunch James & Steve Harris"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1985-10-07","validTo":"1985-11-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|C12082|1985-10-07|1985-11-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12082","name":"Bunch James & Steve Harris"},"object":{"type":"operator","id":"P17126","name":"S-J Coal Company"},"validFrom":"1985-10-07","validTo":"1985-11-24","current":false,"derived":true,"evidenceMineId":"4002747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P17126|1985-10-07|C12082|1985-10-07|86104"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1985-11-25","validTo":"1988-03-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P00869|1985-11-25|1988-03-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00744","name":"Harris Johnny"},"object":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"validFrom":"1985-11-25","validTo":"1988-03-17","current":false,"derived":true,"evidenceMineId":"4002747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P00869|1985-11-25|C00744|1950-01-01|49729"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19726","name":"S I M B A Coal Corp"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1988-03-18","validTo":"1988-10-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P19726|1988-03-18|1988-10-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10255","name":"Reeves Terry C"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1988-03-18","validTo":"1988-10-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|C10255|1988-03-18|1988-10-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10255","name":"Reeves Terry C"},"object":{"type":"operator","id":"P19726","name":"S I M B A Coal Corp"},"validFrom":"1988-03-18","validTo":"1988-10-03","current":false,"derived":true,"evidenceMineId":"4002747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P19726|1988-03-18|C10255|1988-03-18|81574"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19941","name":"Weststar Coal Company Inc"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1988-10-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P19941|1988-10-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12389","name":"Maggard Carlos J"},"object":{"type":"mine","id":"4002747","name":"Weststar Coal Co"},"validFrom":"1988-10-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|C12389|1988-10-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12389","name":"Maggard Carlos J"},"object":{"type":"operator","id":"P19941","name":"Weststar Coal Company Inc"},"validFrom":"1988-10-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4002747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002747|P19941|1988-10-04|C12389|1988-10-04|86786"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4002747","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"}}