{"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":"0102883","name":"Dawson Pit"},"operator":{"type":"operator","id":"L38697","name":"Stacey Construction LLC"},"controller":{"type":"controller","id":"0196141","name":"Issac G  Stacey III; Susan  Stacey"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L38697","name":"Stacey Construction LLC"},"object":{"type":"mine","id":"0102883","name":"Dawson Pit"},"validFrom":"1990-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|L38697|1990-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M38697","name":"Glenn  Stacey Jr"},"object":{"type":"mine","id":"0102883","name":"Dawson Pit"},"validFrom":"1990-10-01","validTo":"2025-02-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|M38697|1990-10-01|2025-02-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M38697","name":"Glenn  Stacey Jr"},"object":{"type":"operator","id":"L38697","name":"Stacey Construction LLC"},"validFrom":"1990-10-01","validTo":"2025-02-08","current":false,"derived":true,"evidenceMineId":"0102883","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|L38697|1990-10-01|M38697|1990-10-01|168139"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0196141","name":"Issac G  Stacey III et al"},"object":{"type":"mine","id":"0102883","name":"Dawson Pit"},"validFrom":"2025-02-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|0196141|2025-02-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0196141","name":"Issac G  Stacey III et al"},"object":{"type":"operator","id":"L38697","name":"Stacey Construction LLC"},"validFrom":"2025-02-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102883","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|L38697|1990-10-01|0196141|2025-02-09|41857"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0196141","name":"Susan  Stacey et al"},"object":{"type":"operator","id":"L38697","name":"Stacey Construction LLC"},"validFrom":"2025-02-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102883","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102883|L38697|1990-10-01|0196141|2025-02-09|41858"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102883","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"}}