{"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":"2001067","name":"WASH PLANT"},"operator":{"type":"operator","id":"L10225","name":"Northern Sand & Gravel"},"controller":{"type":"controller","id":"0106465","name":"Allan Lee  VanSloten"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10224","name":"Soo Gravel & Asphalt Company"},"object":{"type":"mine","id":"2001067","name":"WASH PLANT"},"validFrom":"1950-01-01","validTo":"1988-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|L10224|1950-01-01|1988-04-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07963","name":"Walter  LaCoursiere"},"object":{"type":"mine","id":"2001067","name":"WASH PLANT"},"validFrom":"1950-01-01","validTo":"1988-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|M07963|1950-01-01|1988-04-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07963","name":"Walter  LaCoursiere"},"object":{"type":"operator","id":"L10224","name":"Soo Gravel & Asphalt Company"},"validFrom":"1950-01-01","validTo":"1988-04-19","current":false,"derived":true,"evidenceMineId":"2001067","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|L10224|1950-01-01|M07963|1950-01-01|142416"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10225","name":"Northern Sand & Gravel"},"object":{"type":"mine","id":"2001067","name":"WASH PLANT"},"validFrom":"1988-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|L10225|1988-04-20|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07964","name":"Raymond  Van Sloten"},"object":{"type":"mine","id":"2001067","name":"WASH PLANT"},"validFrom":"1988-04-20","validTo":"2012-10-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|M07964|1988-04-20|2012-10-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07964","name":"Raymond  Van Sloten"},"object":{"type":"operator","id":"L10225","name":"Northern Sand & Gravel"},"validFrom":"1988-04-20","validTo":"2012-10-16","current":false,"derived":true,"evidenceMineId":"2001067","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|L10225|1988-04-20|M07964|1988-04-20|142417"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0106465","name":"Allan Lee  VanSloten"},"object":{"type":"mine","id":"2001067","name":"WASH PLANT"},"validFrom":"2012-10-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|0106465|2012-10-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106465","name":"Allan Lee  VanSloten"},"object":{"type":"operator","id":"L10225","name":"Northern Sand & Gravel"},"validFrom":"2012-10-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"2001067","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2001067|L10225|1988-04-20|0106465|2012-10-17|18852"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2001067","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"}}