{"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":"3609640","name":"Lake Como Quarry"},"operator":{"type":"operator","id":"0208213","name":"Lake Como Mill Quarry LLC"},"controller":{"type":"controller","id":"0199200","name":"Nektarios M  Fitzpatrick"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0092066","name":"Creamton Block Company LLC"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2008-07-01","validTo":"2020-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0092066|2008-07-01|2020-07-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0053851","name":"Kevin  Schrader"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2008-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0053851|2008-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0053851","name":"Kevin  Schrader"},"object":{"type":"operator","id":"0092066","name":"Creamton Block Company LLC"},"validFrom":"2008-07-01","validTo":"2020-07-30","current":false,"derived":true,"evidenceMineId":"3609640","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0092066|2008-07-01|0053851|2008-07-01|6908"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0175093","name":"Leo's 848 Products LLC"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2020-07-31","validTo":"2026-04-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0175093|2020-07-31|2026-04-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0127861","name":"Nicholas A Shursky"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2020-07-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0127861|2020-07-31|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0127861","name":"Nicholas A Shursky"},"object":{"type":"operator","id":"0175093","name":"Leo's 848 Products LLC"},"validFrom":"2020-07-31","validTo":"2026-04-06","current":false,"derived":true,"evidenceMineId":"3609640","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0175093|2020-07-31|0127861|2020-07-31|25057"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0208213","name":"Lake Como Mill Quarry LLC"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2026-04-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0208213|2026-04-07|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0199200","name":"Nektarios M  Fitzpatrick"},"object":{"type":"mine","id":"3609640","name":"Lake Como Quarry"},"validFrom":"2026-04-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0199200|2026-04-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0199200","name":"Nektarios M  Fitzpatrick"},"object":{"type":"operator","id":"0208213","name":"Lake Como Mill Quarry LLC"},"validFrom":"2026-04-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609640","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609640|0208213|2026-04-07|0199200|2026-04-07|42395"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609640","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"}}