{"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":"1300749","name":"WASHCREW #1"},"operator":{"type":"operator","id":"L06685","name":"CROELL, INC."},"controller":{"type":"controller","id":"0126881","name":"Kurt  Croell"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04193","name":"Carpenter & Kraft Ready Mix"},"object":{"type":"mine","id":"1300749","name":"WASHCREW #1"},"validFrom":"1950-01-01","validTo":"1983-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|L04193|1950-01-01|1983-08-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03373","name":"Frank M  Kraft"},"object":{"type":"mine","id":"1300749","name":"WASHCREW #1"},"validFrom":"1950-01-01","validTo":"1988-07-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|M03373|1950-01-01|1988-07-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03373","name":"Frank M  Kraft"},"object":{"type":"operator","id":"L04193","name":"Carpenter & Kraft Ready Mix"},"validFrom":"1950-01-01","validTo":"1983-08-29","current":false,"derived":true,"evidenceMineId":"1300749","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|L04193|1950-01-01|M03373|1950-01-01|128878"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05324","name":"Roger  Croell"},"object":{"type":"mine","id":"1300749","name":"WASHCREW #1"},"validFrom":"1950-01-01","validTo":"2013-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|M05324|1950-01-01|2013-12-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06685","name":"Croell, Inc."},"object":{"type":"mine","id":"1300749","name":"WASHCREW #1"},"validFrom":"1983-08-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|L06685|1983-08-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05324","name":"Roger  Croell"},"object":{"type":"operator","id":"L06685","name":"Croell, Inc."},"validFrom":"1983-08-30","validTo":"2013-12-31","current":false,"derived":true,"evidenceMineId":"1300749","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|L06685|1983-08-30|M05324|1950-01-01|134206"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0126881","name":"Kurt  Croell"},"object":{"type":"mine","id":"1300749","name":"WASHCREW #1"},"validFrom":"2014-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|0126881|2014-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0126881","name":"Kurt  Croell"},"object":{"type":"operator","id":"L06685","name":"Croell, Inc."},"validFrom":"2014-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1300749","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300749|L06685|1983-08-30|0126881|2014-01-01|24604"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1300749","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"}}