{"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":"0503835","name":"PORTABLE CRUSHER #2"},"operator":{"type":"operator","id":"L32610","name":"Dillon Construction"},"controller":{"type":"controller","id":"M32610","name":"David  Dillon"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M31242","name":"Wendell W  Brinkmann"},"object":{"type":"mine","id":"0503835","name":"PORTABLE CRUSHER #2"},"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":"0503835|M31242|1979-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M32610","name":"David  Dillon"},"object":{"type":"mine","id":"0503835","name":"PORTABLE CRUSHER #2"},"validFrom":"1982-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503835|M32610|1982-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L31242","name":"Brinkmann-Woodward Construction Company"},"object":{"type":"mine","id":"0503835","name":"PORTABLE CRUSHER #2"},"validFrom":"1983-02-01","validTo":"1999-07-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503835|L31242|1983-02-01|1999-07-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M31242","name":"Wendell W  Brinkmann"},"object":{"type":"operator","id":"L31242","name":"Brinkmann-Woodward Construction Company"},"validFrom":"1983-02-01","validTo":"1999-07-26","current":false,"derived":true,"evidenceMineId":"0503835","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503835|L31242|1983-02-01|M31242|1979-01-01|159520"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L32610","name":"Dillon Construction"},"object":{"type":"mine","id":"0503835","name":"PORTABLE CRUSHER #2"},"validFrom":"1999-07-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503835|L32610|1999-07-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M32610","name":"David  Dillon"},"object":{"type":"operator","id":"L32610","name":"Dillon Construction"},"validFrom":"1999-07-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503835","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503835|L32610|1999-07-27|M32610|1982-08-01|161122"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503835","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"}}