{"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":"3102315","name":"Steel Gray"},"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":"controller_controls_mine","subject":{"type":"controller","id":"M02858","name":"Timothy A  Buechel"},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"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":"3102315|M02858|1979-01-01|2016-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119521","name":"Kenneth Lee  Pearson"},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"validFrom":"2015-03-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|0119521|2015-03-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0135381","name":"Scott  Buechel et al"},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"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":"3102315|0135381|2017-01-01|2025-01-07"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0140333","name":"Blue Ridge Mountain Stone, LLC"},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"validFrom":"2017-09-01","validTo":"2018-10-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|0140333|2017-09-01|2018-10-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119521","name":"Kenneth Lee  Pearson"},"object":{"type":"operator","id":"0140333","name":"Blue Ridge Mountain Stone, LLC"},"validFrom":"2017-09-01","validTo":"2018-10-09","current":false,"derived":true,"evidenceMineId":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|0140333|2017-09-01|0119521|2015-03-05|22846"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03563","name":"Buechel Stone Corp."},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"validFrom":"2018-10-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0135381","name":"Scott  Buechel et al"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp."},"validFrom":"2018-10-10","validTo":"2025-01-07","current":false,"derived":true,"evidenceMineId":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|0135381|2017-01-01|27198"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0135381","name":"Michael  Buechel et al"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp."},"validFrom":"2018-10-10","validTo":"2025-01-07","current":false,"derived":true,"evidenceMineId":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|0135381|2017-01-01|27199"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02858","name":"Timothy A  Buechel"},"object":{"type":"operator","id":"L03563","name":"Buechel Stone Corp."},"validFrom":"2018-10-10","validTo":"2016-12-31","current":false,"derived":true,"evidenceMineId":"3102315","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|M02858|1979-01-01|127166"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0189781","name":"Michael  Buechel"},"object":{"type":"mine","id":"3102315","name":"Steel Gray"},"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":"3102315|0189781|2025-01-08|"}},{"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":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|0189781|2025-01-08|40395"}},{"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":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|0189781|2025-01-08|40396"}},{"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":"3102315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102315|L03563|2018-10-10|0189781|2025-01-08|40397"}}],"coverage":{"historyRecords":7,"edgeCount":13,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3102315","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"}}