{"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":"3201045","name":"Track Jaw"},"operator":{"type":"operator","id":"0189253","name":"Prism Logisitics, LLC"},"controller":{"type":"controller","id":"0177080","name":"John  Melgaard; Kyle  True"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M14337","name":"John E  Melgaard Sr."},"object":{"type":"mine","id":"3201045","name":"Track Jaw"},"validFrom":"2001-09-01","validTo":"2018-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|M14337|2001-09-01|2018-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18624","name":"Melgaard Construction"},"object":{"type":"mine","id":"3201045","name":"Track Jaw"},"validFrom":"2014-10-31","validTo":"2023-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|L18624|2014-10-31|2023-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M14337","name":"John E  Melgaard Sr."},"object":{"type":"operator","id":"L18624","name":"Melgaard Construction"},"validFrom":"2014-10-31","validTo":"2018-09-30","current":false,"derived":true,"evidenceMineId":"3201045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|L18624|2014-10-31|M14337|2001-09-01|157951"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0151381","name":"John E  Melgaard Jr"},"object":{"type":"mine","id":"3201045","name":"Track Jaw"},"validFrom":"2018-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|0151381|2018-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0151381","name":"John E  Melgaard Jr"},"object":{"type":"operator","id":"L18624","name":"Melgaard Construction"},"validFrom":"2018-10-01","validTo":"2023-01-31","current":false,"derived":true,"evidenceMineId":"3201045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|L18624|2014-10-31|0151381|2018-10-01|31261"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0189253","name":"Prism Logisitics, LLC"},"object":{"type":"mine","id":"3201045","name":"Track Jaw"},"validFrom":"2023-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|0189253|2023-02-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0177080","name":"John  Melgaard et al"},"object":{"type":"mine","id":"3201045","name":"Track Jaw"},"validFrom":"2023-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|0177080|2023-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0177080","name":"John  Melgaard et al"},"object":{"type":"operator","id":"0189253","name":"Prism Logisitics, LLC"},"validFrom":"2023-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3201045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|0189253|2023-02-01|0177080|2023-02-01|37974"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0177080","name":"Kyle  True et al"},"object":{"type":"operator","id":"0189253","name":"Prism Logisitics, LLC"},"validFrom":"2023-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3201045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201045|0189253|2023-02-01|0177080|2023-02-01|37975"}}],"coverage":{"historyRecords":4,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3201045","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"}}