{"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":"2000761","name":"Croton Pit"},"operator":{"type":"operator","id":"L11463","name":"Newaygo County Redi-Mix Inc"},"controller":{"type":"controller","id":"M08866","name":"Ray  Oppenhuizen"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11462","name":"K-V Gravel Company"},"object":{"type":"mine","id":"2000761","name":"Croton Pit"},"validFrom":"1950-01-01","validTo":"1990-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|L11462|1950-01-01|1990-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08865","name":"Kolk Harold"},"object":{"type":"mine","id":"2000761","name":"Croton Pit"},"validFrom":"1950-01-01","validTo":"1990-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|M08865|1950-01-01|1990-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08865","name":"Kolk Harold"},"object":{"type":"operator","id":"L11462","name":"K-V Gravel Company"},"validFrom":"1950-01-01","validTo":"1990-01-31","current":false,"derived":true,"evidenceMineId":"2000761","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|L11462|1950-01-01|M08865|1950-01-01|144265"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11463","name":"Newaygo County Redi-Mix Inc"},"object":{"type":"mine","id":"2000761","name":"Croton Pit"},"validFrom":"1990-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|L11463|1990-02-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08866","name":"Ray  Oppenhuizen  et al"},"object":{"type":"mine","id":"2000761","name":"Croton Pit"},"validFrom":"1990-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|M08866|1990-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08866","name":"Ray  Oppenhuizen  et al"},"object":{"type":"operator","id":"L11463","name":"Newaygo County Redi-Mix Inc"},"validFrom":"1990-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2000761","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000761|L11463|1990-02-01|M08866|1990-02-01|144267"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2000761","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"}}