{"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":"4700398","name":"Chilton Quarry"},"operator":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"controller":{"type":"controller","id":"0189781","name":"Shaun  Buechel; Dominique  Von Wald; Michael  Buechel"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03562","name":"Buechels Stone Quarry"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"1950-01-01","validTo":"1979-10-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03562|1950-01-01|1979-10-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02857","name":"Francis  Buechel"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"1950-01-01","validTo":"1979-10-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|M02857|1950-01-01|1979-10-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02857","name":"Francis  Buechel"},"object":{"type":"operator","id":"L03562","name":"Buechels Stone Quarry"},"validFrom":"1950-01-01","validTo":"1979-10-15","current":false,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03562|1950-01-01|M02857|1950-01-01|127160"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02858","name":"Timothy A  Buechel"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"1979-01-01","validTo":"2016-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|M02858|1979-01-01|2016-12-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"1979-10-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02858","name":"Timothy A  Buechel"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"1979-10-16","validTo":"2016-12-31","current":false,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|M02858|1979-01-01|127170"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0135381","name":"Michael  Buechel et al"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"2017-01-01","validTo":"2025-01-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|0135381|2017-01-01|2025-01-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0135381","name":"Michael  Buechel et al"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"2017-01-01","validTo":"2025-01-07","current":false,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|0135381|2017-01-01|27206"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0135381","name":"Scott  Buechel et al"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"2017-01-01","validTo":"2025-01-07","current":false,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|0135381|2017-01-01|27207"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0189781","name":"Dominique  Von Wald"},"object":{"type":"mine","id":"4700398","name":"Chilton Quarry"},"validFrom":"2025-01-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|0189781|2025-01-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0189781","name":"Dominique  Von Wald"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"2025-01-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|0189781|2025-01-08|40407"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0189781","name":"Michael  Buechel"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"2025-01-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|0189781|2025-01-08|40408"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0189781","name":"Shaun  Buechel"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp"},"validFrom":"2025-01-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"4700398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4700398|L03563|1979-10-16|0189781|2025-01-08|40409"}}],"coverage":{"historyRecords":7,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4700398","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"}}