{"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":"0401009","name":"AIKEN CINDER MINE"},"operator":{"type":"operator","id":"L06959","name":"Volco Research"},"controller":{"type":"controller","id":"M05545","name":"Aiken Russell A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03710","name":"Wmk Builders Products"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1950-01-01","validTo":"1980-02-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L03710|1950-01-01|1980-02-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01186","name":"Taggart Construction Company"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1950-01-01","validTo":"1980-02-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|M01186|1950-01-01|1980-02-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01186","name":"Taggart Construction Company"},"object":{"type":"operator","id":"L03710","name":"Wmk Builders Products"},"validFrom":"1950-01-01","validTo":"1980-02-29","current":false,"derived":true,"evidenceMineId":"0401009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L03710|1950-01-01|M01186|1950-01-01|117301"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04282","name":"Wmk Builders Products"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1980-03-01","validTo":"1983-11-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L04282|1980-03-01|1983-11-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01219","name":"Consolidated Gold Fields Limited"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1980-03-01","validTo":"1983-11-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|M01219|1980-03-01|1983-11-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01219","name":"Consolidated Gold Fields Limited"},"object":{"type":"operator","id":"L04282","name":"Wmk Builders Products"},"validFrom":"1980-03-01","validTo":"1983-11-20","current":false,"derived":true,"evidenceMineId":"0401009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L04282|1980-03-01|M01219|1980-03-01|117497"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06959","name":"Volco Research"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1983-11-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L06959|1983-11-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05545","name":"Aiken Russell A Et Al"},"object":{"type":"mine","id":"0401009","name":"AIKEN CINDER MINE"},"validFrom":"1983-11-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|M05545|1983-11-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05545","name":"Aiken Russell A Et Al"},"object":{"type":"operator","id":"L06959","name":"Volco Research"},"validFrom":"1983-11-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"0401009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401009|L06959|1983-11-21|M05545|1983-11-21|134832"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0401009","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"}}