{"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":"4607445","name":"Campbells Creek No 2"},"operator":{"type":"operator","id":"P21558","name":"Talon Resources Inc"},"controller":{"type":"controller","id":"C00085","name":"Richard H  Abraham"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00085","name":"Richard H  Abraham et al"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 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":"4607445|C00085|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01850","name":"Lawson W  Hamilton Jr"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 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":"4607445|C01850|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19447","name":"V Coal Company Inc"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1988-01-01","validTo":"1989-05-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P19447|1988-01-01|1989-05-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13355","name":"Vance Michael"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1988-01-01","validTo":"1989-05-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|C13355|1988-01-01|1989-05-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13355","name":"Vance Michael"},"object":{"type":"operator","id":"P19447","name":"V Coal Company Inc"},"validFrom":"1988-01-01","validTo":"1989-05-29","current":false,"derived":true,"evidenceMineId":"4607445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P19447|1988-01-01|C13355|1988-01-01|89447"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00663","name":"Ford Coal Company"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1989-05-30","validTo":"1989-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P00663|1989-05-30|1989-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01850","name":"Lawson W  Hamilton Jr"},"object":{"type":"operator","id":"P00663","name":"Ford Coal Company"},"validFrom":"1989-05-30","validTo":"1989-07-31","current":false,"derived":true,"evidenceMineId":"4607445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P00663|1989-05-30|C01850|1950-01-01|56477"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20447","name":"Red River Valley Coal Company"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1989-08-01","validTo":"1989-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P20447|1989-08-01|1989-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00012","name":"Ashland Inc et al"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1989-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|C00012|1989-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00012","name":"Ashland Inc et al"},"object":{"type":"operator","id":"P20447","name":"Red River Valley Coal Company"},"validFrom":"1989-08-01","validTo":"1989-12-31","current":false,"derived":true,"evidenceMineId":"4607445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P20447|1989-08-01|C00012|1989-08-01|43418"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21558","name":"Talon Resources Inc"},"object":{"type":"mine","id":"4607445","name":"Campbells Creek No 2"},"validFrom":"1990-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P21558|1990-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00085","name":"Richard H  Abraham et al"},"object":{"type":"operator","id":"P21558","name":"Talon Resources Inc"},"validFrom":"1990-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4607445","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4607445|P21558|1990-01-01|C00085|1950-01-01|44114"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4607445","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"}}