{"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":"0504634","name":"Glacier Rock Pit"},"operator":{"type":"operator","id":"0132234","name":"Glacier Rock Company"},"controller":{"type":"controller","id":"0112421","name":"Roger Lee  Hageman"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16328","name":"Timberline Trucking & Excavating"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"1999-02-01","validTo":"2002-08-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|L16328|1999-02-01|2002-08-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12491","name":"Jim D  Krakel"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"1999-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|M12491|1999-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12491","name":"Jim D  Krakel"},"object":{"type":"operator","id":"L16328","name":"Timberline Trucking & Excavating"},"validFrom":"1999-02-01","validTo":"2002-08-19","current":false,"derived":true,"evidenceMineId":"0504634","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|L16328|1999-02-01|M12491|1999-02-01|153886"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050829","name":"High Plains Sand & Gravel LLC"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"2002-08-20","validTo":"2014-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0050829|2002-08-20|2014-03-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041129","name":"Robert  Pittington Sr  et al"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"2002-08-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0041129|2002-08-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041129","name":"Robert  Pittington Sr  et al"},"object":{"type":"operator","id":"0050829","name":"High Plains Sand & Gravel LLC"},"validFrom":"2002-08-20","validTo":"2014-03-18","current":false,"derived":true,"evidenceMineId":"0504634","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0050829|2002-08-20|0041129|2002-08-20|1446"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041129","name":"Robert  Pittington Jr  et al"},"object":{"type":"operator","id":"0050829","name":"High Plains Sand & Gravel LLC"},"validFrom":"2002-08-20","validTo":"2014-03-18","current":false,"derived":true,"evidenceMineId":"0504634","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0050829|2002-08-20|0041129|2002-08-20|1447"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0132234","name":"Glacier Rock Company"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"2014-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0132234|2014-03-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0112421","name":"Roger Lee  Hageman"},"object":{"type":"mine","id":"0504634","name":"Glacier Rock Pit"},"validFrom":"2014-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0112421|2014-03-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0112421","name":"Roger Lee  Hageman"},"object":{"type":"operator","id":"0132234","name":"Glacier Rock Company"},"validFrom":"2014-03-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0504634","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504634|0132234|2014-03-19|0112421|2014-03-19|20910"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0504634","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"}}