{"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":"3500710","name":"Ontario Redi-Mix Pit"},"operator":{"type":"operator","id":"L06855","name":"Ontario Redi-Mix"},"controller":{"type":"controller","id":"M05465","name":"Allen Ted & John Sigurdson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00290","name":"Monroc Inc"},"object":{"type":"mine","id":"3500710","name":"Ontario Redi-Mix Pit"},"validFrom":"1950-01-01","validTo":"1983-09-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|L00290|1950-01-01|1983-09-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00234","name":"Wel-Com Financial Services & M-K Holding Corp"},"object":{"type":"mine","id":"3500710","name":"Ontario Redi-Mix Pit"},"validFrom":"1950-01-01","validTo":"2000-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|M00234|1950-01-01|2000-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00234","name":"Wel-Com Financial Services & M-K Holding Corp"},"object":{"type":"operator","id":"L00290","name":"Monroc Inc"},"validFrom":"1950-01-01","validTo":"1983-09-12","current":false,"derived":true,"evidenceMineId":"3500710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|L00290|1950-01-01|M00234|1950-01-01|107932"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06855","name":"Ontario Redi-Mix"},"object":{"type":"mine","id":"3500710","name":"Ontario Redi-Mix Pit"},"validFrom":"1983-09-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|L06855|1983-09-13|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05465","name":"Allen Ted & John Sigurdson Et Al"},"object":{"type":"mine","id":"3500710","name":"Ontario Redi-Mix Pit"},"validFrom":"1983-09-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|M05465|1983-09-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05465","name":"Allen Ted & John Sigurdson Et Al"},"object":{"type":"operator","id":"L06855","name":"Ontario Redi-Mix"},"validFrom":"1983-09-13","validTo":null,"current":true,"derived":true,"evidenceMineId":"3500710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3500710|L06855|1983-09-13|M05465|1983-09-13|134692"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3500710","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"}}