{"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":"1516250","name":"Charcoal No 1"},"operator":{"type":"operator","id":"P19106","name":"Lakeshore Equipment Company Inc"},"controller":{"type":"controller","id":"C13196","name":"Moore Harry E"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13196","name":"Moore Harry E"},"object":{"type":"mine","id":"1516250","name":"Charcoal No 1"},"validFrom":"1987-08-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|C13196|1987-08-18|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19163","name":"Emco Coal Company"},"object":{"type":"mine","id":"1516250","name":"Charcoal No 1"},"validFrom":"1987-11-01","validTo":"1988-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|P19163|1987-11-01|1988-09-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13232","name":"Evans Curtis Et Al"},"object":{"type":"mine","id":"1516250","name":"Charcoal No 1"},"validFrom":"1987-11-01","validTo":"1989-12-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|C13232|1987-11-01|1989-12-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13232","name":"Evans Curtis Et Al"},"object":{"type":"operator","id":"P19163","name":"Emco Coal Company"},"validFrom":"1987-11-01","validTo":"1988-09-20","current":false,"derived":true,"evidenceMineId":"1516250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|P19163|1987-11-01|C13232|1987-11-01|89036"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19106","name":"Lakeshore Equipment Company Inc"},"object":{"type":"mine","id":"1516250","name":"Charcoal No 1"},"validFrom":"1988-09-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|P19106|1988-09-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13196","name":"Moore Harry E"},"object":{"type":"operator","id":"P19106","name":"Lakeshore Equipment Company Inc"},"validFrom":"1988-09-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516250|P19106|1988-09-21|C13196|1987-08-18|88973"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516250","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"}}