{"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":"4104375","name":"Altair Plant"},"operator":{"type":"operator","id":"0108226","name":"Alleyton Resource Co., LLC"},"controller":{"type":"controller","id":"M02046","name":"Summit Materials LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050463","name":"Colorado County Sand & Gravel Co LLC"},"object":{"type":"mine","id":"4104375","name":"Altair Plant"},"validFrom":"2002-07-01","validTo":"2014-10-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0050463|2002-07-01|2014-10-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35838","name":"Frank W  Marek"},"object":{"type":"mine","id":"4104375","name":"Altair Plant"},"validFrom":"2002-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|M35838|2002-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35838","name":"Frank W  Marek"},"object":{"type":"operator","id":"0050463","name":"Colorado County Sand & Gravel Co LLC"},"validFrom":"2002-07-01","validTo":"2014-10-19","current":false,"derived":true,"evidenceMineId":"4104375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0050463|2002-07-01|M35838|2002-07-01|164802"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041067","name":"Todd  Barten Et Al"},"object":{"type":"mine","id":"4104375","name":"Altair Plant"},"validFrom":"2010-03-19","validTo":"2014-01-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0041067|2010-03-19|2014-01-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02046","name":"Summit Materials LLC"},"object":{"type":"mine","id":"4104375","name":"Altair Plant"},"validFrom":"2014-01-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|M02046|2014-01-23|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0108226","name":"Alleyton Resource Co., LLC"},"object":{"type":"mine","id":"4104375","name":"Altair Plant"},"validFrom":"2014-10-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0108226|2014-10-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041067","name":"Todd  Barten Et Al"},"object":{"type":"operator","id":"0108226","name":"Alleyton Resource Co., LLC"},"validFrom":"2014-10-20","validTo":"2014-01-22","current":false,"derived":true,"evidenceMineId":"4104375","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0108226|2014-10-20|0041067|2010-03-19|1338"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02046","name":"Summit Materials LLC"},"object":{"type":"operator","id":"0108226","name":"Alleyton Resource Co., LLC"},"validFrom":"2014-10-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"4104375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104375|0108226|2014-10-20|M02046|2014-01-23|122995"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4104375","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"}}