{"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":"4503569","name":"Sleep Hollow Quarry"},"operator":{"type":"operator","id":"0130615","name":"Sleepy Hollow Quarry Inc."},"controller":{"type":"controller","id":"0111147","name":"LaVina L  Dennis; Dale A  Dennis"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0054096","name":"Dennis Contracting"},"object":{"type":"mine","id":"4503569","name":"Sleep Hollow Quarry"},"validFrom":"2004-08-27","validTo":"2013-11-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0054096|2004-08-27|2013-11-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0044867","name":"Dale A  Dennis"},"object":{"type":"mine","id":"4503569","name":"Sleep Hollow Quarry"},"validFrom":"2004-08-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0044867|2004-08-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0044867","name":"Dale A  Dennis"},"object":{"type":"operator","id":"0054096","name":"Dennis Contracting"},"validFrom":"2004-08-27","validTo":"2013-11-13","current":false,"derived":true,"evidenceMineId":"4503569","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0054096|2004-08-27|0044867|2004-08-27|5168"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0130615","name":"Sleepy Hollow Quarry Inc."},"object":{"type":"mine","id":"4503569","name":"Sleep Hollow Quarry"},"validFrom":"2013-11-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0130615|2013-11-14|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111147","name":"LaVina L  Dennis et al"},"object":{"type":"mine","id":"4503569","name":"Sleep Hollow Quarry"},"validFrom":"2013-11-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0111147|2013-11-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111147","name":"LaVina L  Dennis et al"},"object":{"type":"operator","id":"0130615","name":"Sleepy Hollow Quarry Inc."},"validFrom":"2013-11-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"4503569","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0130615|2013-11-14|0111147|2013-11-14|20428"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111147","name":"Dale A  Dennis et al"},"object":{"type":"operator","id":"0130615","name":"Sleepy Hollow Quarry Inc."},"validFrom":"2013-11-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"4503569","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4503569|0130615|2013-11-14|0111147|2013-11-14|20429"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4503569","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"}}