{"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":"1509914","name":"No 2 Surface"},"operator":{"type":"operator","id":"P05968","name":"Globe Coal Company Inc"},"controller":{"type":"controller","id":"C03873","name":"Howell Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00867","name":"Hogg Jim"},"object":{"type":"mine","id":"1509914","name":"No 2 Surface"},"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":"1509914|C00867|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03496","name":"Globe Coal Company Inc"},"object":{"type":"mine","id":"1509914","name":"No 2 Surface"},"validFrom":"1976-08-05","validTo":"1977-03-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1509914|P03496|1976-08-05|1977-03-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00867","name":"Hogg Jim"},"object":{"type":"operator","id":"P03496","name":"Globe Coal Company Inc"},"validFrom":"1976-08-05","validTo":"1977-03-09","current":false,"derived":true,"evidenceMineId":"1509914","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1509914|P03496|1976-08-05|C00867|1950-01-01|50671"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05968","name":"Globe Coal Company Inc"},"object":{"type":"mine","id":"1509914","name":"No 2 Surface"},"validFrom":"1977-03-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1509914|P05968|1977-03-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03873","name":"Howell Corporation"},"object":{"type":"mine","id":"1509914","name":"No 2 Surface"},"validFrom":"1977-03-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1509914|C03873|1977-03-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03873","name":"Howell Corporation"},"object":{"type":"operator","id":"P05968","name":"Globe Coal Company Inc"},"validFrom":"1977-03-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1509914","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1509914|P05968|1977-03-10|C03873|1977-03-10|64130"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1509914","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"}}