{"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":"4606236","name":"Countyline Strip"},"operator":{"type":"operator","id":"P01303","name":"Perry & Hylton Inc"},"controller":{"type":"controller","id":"C01104","name":"Hylton Tracy W"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01104","name":"Hylton Tracy W"},"object":{"type":"mine","id":"4606236","name":"Countyline Strip"},"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":"4606236|C01104|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01660","name":"Graybeal Carl N Et Al"},"object":{"type":"mine","id":"4606236","name":"Countyline Strip"},"validFrom":"1978-10-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606236|C01660|1978-10-30|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P09115","name":"Graybeals Indian Creek Coal Company Inc"},"object":{"type":"mine","id":"4606236","name":"Countyline Strip"},"validFrom":"1980-09-01","validTo":"1983-08-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606236|P09115|1980-09-01|1983-08-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01660","name":"Graybeal Carl N Et Al"},"object":{"type":"operator","id":"P09115","name":"Graybeals Indian Creek Coal Company Inc"},"validFrom":"1980-09-01","validTo":"1983-08-09","current":false,"derived":true,"evidenceMineId":"4606236","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606236|P09115|1980-09-01|C01660|1978-10-30|55516"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01303","name":"Perry & Hylton Inc"},"object":{"type":"mine","id":"4606236","name":"Countyline Strip"},"validFrom":"1983-08-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606236|P01303|1983-08-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01104","name":"Hylton Tracy W"},"object":{"type":"operator","id":"P01303","name":"Perry & Hylton Inc"},"validFrom":"1983-08-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"4606236","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606236|P01303|1983-08-10|C01104|1950-01-01|52341"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4606236","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"}}