{"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":"2026-10-17T05:35:58.500035+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":"3303781","name":"Oeder & Sons Sand & Gravel"},"operator":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"controller":{"type":"controller","id":"0170320","name":"David L Oeder; Donald C Oeder; Doug P Oeder"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"object":{"type":"mine","id":"3303781","name":"Oeder & Sons Sand & Gravel"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|L31567|1979-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M31567","name":"Carl E Oeder"},"object":{"type":"mine","id":"3303781","name":"Oeder & Sons Sand & Gravel"},"validFrom":"1979-01-01","validTo":"2021-10-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|M31567|1979-01-01|2021-10-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M31567","name":"Carl E Oeder"},"object":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"validFrom":"1979-01-01","validTo":"2021-10-20","current":false,"derived":true,"evidenceMineId":"3303781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|L31567|1979-01-01|M31567|1979-01-01|159914"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0170320","name":"Donald C Oeder et al"},"object":{"type":"mine","id":"3303781","name":"Oeder & Sons Sand & Gravel"},"validFrom":"2021-10-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|0170320|2021-10-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170320","name":"Donald C Oeder et al"},"object":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"validFrom":"2021-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3303781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|L31567|1979-01-01|0170320|2021-10-21|36093"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170320","name":"David L Oeder et al"},"object":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"validFrom":"2021-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3303781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|L31567|1979-01-01|0170320|2021-10-21|36094"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170320","name":"Doug P Oeder et al"},"object":{"type":"operator","id":"L31567","name":"Oeder & Sons Garage Inc."},"validFrom":"2021-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3303781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3303781|L31567|1979-01-01|0170320|2021-10-21|36095"}}],"coverage":{"historyRecords":4,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3303781","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}