{"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":"0405468","name":"DS-10"},"operator":{"type":"operator","id":"0050187","name":"Foss Maritime Company"},"controller":{"type":"controller","id":"0040609","name":"Saltchuck Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17912","name":"Marine Aggregate Services"},"object":{"type":"mine","id":"0405468","name":"DS-10"},"validFrom":"2000-12-01","validTo":"2002-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|L17912|2000-12-01|2002-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"0405468","name":"DS-10"},"validFrom":"2000-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|M00521|2000-12-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L17912","name":"Marine Aggregate Services"},"validFrom":"2000-12-01","validTo":"2002-03-31","current":false,"derived":true,"evidenceMineId":"0405468","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|L17912|2000-12-01|M00521|2000-12-01|112622"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050187","name":"Foss Maritime Company"},"object":{"type":"mine","id":"0405468","name":"DS-10"},"validFrom":"2002-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|0050187|2002-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040609","name":"Saltchuck Resources Inc"},"object":{"type":"mine","id":"0405468","name":"DS-10"},"validFrom":"2002-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|0040609|2002-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040609","name":"Saltchuck Resources Inc"},"object":{"type":"operator","id":"0050187","name":"Foss Maritime Company"},"validFrom":"2002-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405468","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405468|0050187|2002-04-01|0040609|2002-04-01|329"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0405468","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"}}