{"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":"2026-10-18T09:31:49.615908+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":"3610267","name":"EAGLE 1200-25CC PORTABLE CRUSHER SN31546"},"operator":{"type":"operator","id":"L15075","name":"DAGGETT SAND & GRAVEL INC"},"controller":{"type":"controller","id":"M11480","name":"Stephen  Hess; Scott  Hess"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11480","name":"Scott  Hess et al"},"object":{"type":"mine","id":"3610267","name":"EAGLE 1200-25CC PORTABLE CRUSHER SN31546"},"validFrom":"1997-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3610267|M11480|1997-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15075","name":"Daggett Sand & Gravel Inc"},"object":{"type":"mine","id":"3610267","name":"EAGLE 1200-25CC PORTABLE CRUSHER SN31546"},"validFrom":"2018-10-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3610267|L15075|2018-10-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11480","name":"Scott  Hess et al"},"object":{"type":"operator","id":"L15075","name":"Daggett Sand & Gravel Inc"},"validFrom":"2018-10-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"3610267","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3610267|L15075|2018-10-28|M11480|1997-04-01|151571"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11480","name":"Stephen  Hess et al"},"object":{"type":"operator","id":"L15075","name":"Daggett Sand & Gravel Inc"},"validFrom":"2018-10-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"3610267","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3610267|L15075|2018-10-28|M11480|1997-04-01|151572"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3610267","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}