{"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":"3303658","name":"Harlem Mine #7"},"operator":{"type":"operator","id":"P23913","name":"Myers Mining Co. LTD"},"controller":{"type":"controller","id":"C15685","name":"Benjamin A  Erb"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07254","name":"Burrier Sales"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1977-10-01","validTo":"1979-01-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P07254|1977-10-01|1979-01-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05998","name":"Harold L  Burrier"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1977-10-01","validTo":"1979-01-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|C05998|1977-10-01|1979-01-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05998","name":"Harold L  Burrier"},"object":{"type":"operator","id":"P07254","name":"Burrier Sales"},"validFrom":"1977-10-01","validTo":"1979-01-23","current":false,"derived":true,"evidenceMineId":"3303658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P07254|1977-10-01|C05998|1977-10-01|70531"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06434","name":"James L  Myers"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1978-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|C06434|1978-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07969","name":"Myers Mining"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1979-01-24","validTo":"1997-11-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P07969|1979-01-24|1997-11-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06434","name":"James L  Myers"},"object":{"type":"operator","id":"P07969","name":"Myers Mining"},"validFrom":"1979-01-24","validTo":"1997-11-03","current":false,"derived":true,"evidenceMineId":"3303658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P07969|1979-01-24|C06434|1978-01-01|71840"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23913","name":"Myers Mining Co. LTD"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1997-11-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P23913|1997-11-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15685","name":"Benjamin A  Erb"},"object":{"type":"mine","id":"3303658","name":"Harlem Mine #7"},"validFrom":"1997-11-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|C15685|1997-11-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15685","name":"Benjamin A  Erb"},"object":{"type":"operator","id":"P23913","name":"Myers Mining Co. LTD"},"validFrom":"1997-11-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"3303658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303658|P23913|1997-11-04|C15685|1997-11-04|96518"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3303658","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"}}