{"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":"2026-10-17T05:35:58.500035+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":"4605445","name":"Banacek #2"},"operator":{"type":"operator","id":"P19041","name":"Bern Fuel Inc"},"controller":{"type":"controller","id":"C13226","name":"Charles Robert B"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|C02508|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02960","name":"Trace Fork Coal Company"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1979-04-01","validTo":"1985-09-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P02960|1979-04-01|1985-09-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P02960","name":"Trace Fork Coal Company"},"validFrom":"1979-04-01","validTo":"1985-09-08","current":false,"derived":true,"evidenceMineId":"4605445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P02960|1979-04-01|C02508|1950-01-01|58951"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17074","name":"Digum Coal Company Inc"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1985-09-09","validTo":"1986-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P17074|1985-09-09|1986-01-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12054","name":"Hagerman Luther"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1985-09-09","validTo":"1986-01-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|C12054|1985-09-09|1986-01-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12054","name":"Hagerman Luther"},"object":{"type":"operator","id":"P17074","name":"Digum Coal Company Inc"},"validFrom":"1985-09-09","validTo":"1986-01-01","current":false,"derived":true,"evidenceMineId":"4605445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P17074|1985-09-09|C12054|1985-09-09|86045"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12072","name":"Ted  Osborne  et al"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1985-09-09","validTo":"1990-01-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|C12072|1985-09-09|1990-01-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17103","name":"Soho Coal Company Inc"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1986-01-02","validTo":"1987-09-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P17103|1986-01-02|1987-09-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12072","name":"Ted  Osborne  et al"},"object":{"type":"operator","id":"P17103","name":"Soho Coal Company Inc"},"validFrom":"1986-01-02","validTo":"1987-09-24","current":false,"derived":true,"evidenceMineId":"4605445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P17103|1986-01-02|C12072|1985-09-09|86094"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19041","name":"Bern Fuel Inc"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1987-09-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P19041|1987-09-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13226","name":"Charles Robert B"},"object":{"type":"mine","id":"4605445","name":"Banacek #2"},"validFrom":"1987-09-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|C13226|1987-09-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13226","name":"Charles Robert B"},"object":{"type":"operator","id":"P19041","name":"Bern Fuel Inc"},"validFrom":"1987-09-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"4605445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605445|P19041|1987-09-25|C13226|1987-09-25|89041"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4605445","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}