{"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":"4703368","name":"T- Rex  Pit"},"operator":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"controller":{"type":"controller","id":"0187783","name":"Tim L  Becken; Thorwald L  Becken"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02637","name":"Hammond T Becken et al"},"object":{"type":"mine","id":"4703368","name":"T- Rex  Pit"},"validFrom":"1979-07-10","validTo":"2024-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|M02637|1979-07-10|2024-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051875","name":"Rexford Corporation-Mining Division"},"object":{"type":"mine","id":"4703368","name":"T- Rex  Pit"},"validFrom":"2003-10-23","validTo":"2007-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|0051875|2003-10-23|2007-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0042589","name":"Thomas H  Rathbun"},"object":{"type":"mine","id":"4703368","name":"T- Rex  Pit"},"validFrom":"2003-10-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|0042589|2003-10-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0042589","name":"Thomas H  Rathbun"},"object":{"type":"operator","id":"0051875","name":"Rexford Corporation-Mining Division"},"validFrom":"2003-10-23","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"4703368","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|0051875|2003-10-23|0042589|2003-10-23|4086"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"object":{"type":"mine","id":"4703368","name":"T- Rex  Pit"},"validFrom":"2007-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|L03287|2007-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02637","name":"Hammond T Becken et al"},"object":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"validFrom":"2007-06-01","validTo":"2024-09-30","current":false,"derived":true,"evidenceMineId":"4703368","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|L03287|2007-06-01|M02637|1979-07-10|126380"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02637","name":"Tim L Becken et al"},"object":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"validFrom":"2007-06-01","validTo":"2024-09-30","current":false,"derived":true,"evidenceMineId":"4703368","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|L03287|2007-06-01|M02637|1979-07-10|126381"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0187783","name":"Tim L  Becken et al"},"object":{"type":"mine","id":"4703368","name":"T- Rex  Pit"},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|0187783|2024-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0187783","name":"Tim L  Becken et al"},"object":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703368","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|L03287|2007-06-01|0187783|2024-10-01|39984"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0187783","name":"Thorwald L  Becken et al"},"object":{"type":"operator","id":"L03287","name":"Cemstone Ready Mix Inc"},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703368","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703368|L03287|2007-06-01|0187783|2024-10-01|39985"}}],"coverage":{"historyRecords":5,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4703368","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"}}