{"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":"4407152","name":"BMC Quarry"},"operator":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"controller":{"type":"controller","id":"0106981","name":"Salem Stone Corp; Adams Construction; Mountain Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0063523","name":"BMC Rock Inc"},"object":{"type":"mine","id":"4407152","name":"BMC Quarry"},"validFrom":"2005-09-12","validTo":"2015-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0063523|2005-09-12|2015-05-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0053129","name":"Christopher W  Tharpe  et al"},"object":{"type":"mine","id":"4407152","name":"BMC Quarry"},"validFrom":"2005-09-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0053129|2005-09-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0053129","name":"Christopher W  Tharpe  et al"},"object":{"type":"operator","id":"0063523","name":"BMC Rock Inc"},"validFrom":"2005-09-12","validTo":"2015-05-10","current":false,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0063523|2005-09-12|0053129|2005-09-12|6779"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0053129","name":"Curtis Michael  Tharpe  et al"},"object":{"type":"operator","id":"0063523","name":"BMC Rock Inc"},"validFrom":"2005-09-12","validTo":"2015-05-10","current":false,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0063523|2005-09-12|0053129|2005-09-12|6780"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0053129","name":"Beverly  Tharpe Kunath  et al"},"object":{"type":"operator","id":"0063523","name":"BMC Rock Inc"},"validFrom":"2005-09-12","validTo":"2015-05-10","current":false,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0063523|2005-09-12|0053129|2005-09-12|6781"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0092015","name":"Salem Stone Corp et al"},"object":{"type":"mine","id":"4407152","name":"BMC Quarry"},"validFrom":"2010-03-27","validTo":"2012-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0092015|2010-03-27|2012-06-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0106981","name":"Salem Stone Corp et al"},"object":{"type":"mine","id":"4407152","name":"BMC Quarry"},"validFrom":"2012-06-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0106981|2012-06-28|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"object":{"type":"mine","id":"4407152","name":"BMC Quarry"},"validFrom":"2015-05-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0092015","name":"Salem Stone Corp et al"},"object":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"validFrom":"2015-05-11","validTo":"2012-06-27","current":false,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|0092015|2010-03-27|15089"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0092015","name":"Adams Construction et al"},"object":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"validFrom":"2015-05-11","validTo":"2012-06-27","current":false,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|0092015|2010-03-27|15090"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106981","name":"Salem Stone Corp et al"},"object":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"validFrom":"2015-05-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|0106981|2012-06-28|19013"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106981","name":"Adams Construction et al"},"object":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"validFrom":"2015-05-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|0106981|2012-06-28|19014"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106981","name":"Mountain Materials Inc et al"},"object":{"type":"operator","id":"0108746","name":"Southside Materials LLC"},"validFrom":"2015-05-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407152","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407152|0108746|2015-05-11|0106981|2012-06-28|19015"}}],"coverage":{"historyRecords":8,"edgeCount":13,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4407152","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"}}