{"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":"0405935","name":"Limo Rock Remediation"},"operator":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"controller":{"type":"controller","id":"0161985","name":"Roko  Grbic; Mile  Grbic"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0143241","name":"Roko  Grbic et al"},"object":{"type":"mine","id":"0405935","name":"Limo Rock Remediation"},"validFrom":"2018-09-19","validTo":"2020-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0143241|2018-09-19|2020-10-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"object":{"type":"mine","id":"0405935","name":"Limo Rock Remediation"},"validFrom":"2019-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0143241","name":"Roko  Grbic et al"},"object":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"validFrom":"2019-04-03","validTo":"2020-10-31","current":false,"derived":true,"evidenceMineId":"0405935","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|0143241|2018-09-19|29050"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0143241","name":"Mile  Grbic et al"},"object":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"validFrom":"2019-04-03","validTo":"2020-10-31","current":false,"derived":true,"evidenceMineId":"0405935","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|0143241|2018-09-19|29051"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0143241","name":"Charles  Teague et al"},"object":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"validFrom":"2019-04-03","validTo":"2020-10-31","current":false,"derived":true,"evidenceMineId":"0405935","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|0143241|2018-09-19|29052"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0161985","name":"Mile  Grbic et al"},"object":{"type":"mine","id":"0405935","name":"Limo Rock Remediation"},"validFrom":"2020-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0161985|2020-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161985","name":"Mile  Grbic et al"},"object":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"validFrom":"2020-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405935","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|0161985|2020-11-01|33923"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161985","name":"Roko  Grbic et al"},"object":{"type":"operator","id":"0159053","name":"MRC Rock & Sand, LLC."},"validFrom":"2020-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405935","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405935|0159053|2019-04-03|0161985|2020-11-01|33924"}}],"coverage":{"historyRecords":5,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0405935","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"}}