{"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":"4300646","name":"WARREN SWITCH QUARRY"},"operator":{"type":"operator","id":"L12098","name":"CAMARA SLATE PRODUCTS, INC"},"controller":{"type":"controller","id":"M07379","name":"David C Camara"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07379","name":"David C Camara et al"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"1991-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|M07379|1991-03-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12847","name":"Eric  Baker"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"1999-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|M12847|1999-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0070943","name":"Switch Rd Slate"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"2006-04-26","validTo":"2015-09-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|0070943|2006-04-26|2015-09-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0059469","name":"Anthony R  Keough"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"2006-04-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|0059469|2006-04-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0059469","name":"Anthony R  Keough"},"object":{"type":"operator","id":"0070943","name":"Switch Rd Slate"},"validFrom":"2006-04-26","validTo":"2015-09-24","current":false,"derived":true,"evidenceMineId":"4300646","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|0070943|2006-04-26|0059469|2006-04-26|7902"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16820","name":"Baker Slate Inc"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"2015-09-25","validTo":"2016-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|L16820|2015-09-25|2016-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12847","name":"Eric  Baker"},"object":{"type":"operator","id":"L16820","name":"Baker Slate Inc"},"validFrom":"2015-09-25","validTo":"2016-12-31","current":false,"derived":true,"evidenceMineId":"4300646","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|L16820|2015-09-25|M12847|1999-09-01|154725"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12098","name":"Camara Slate Products, Inc"},"object":{"type":"mine","id":"4300646","name":"WARREN SWITCH QUARRY"},"validFrom":"2017-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|L12098|2017-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07379","name":"David C Camara et al"},"object":{"type":"operator","id":"L12098","name":"Camara Slate Products, Inc"},"validFrom":"2017-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300646","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300646|L12098|2017-01-01|M07379|1991-03-01|141171"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4300646","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"}}