{"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":"4104182","name":"Tyler Plant"},"operator":{"type":"operator","id":"L14417","name":"U.S. Silica Company"},"controller":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"1996-03-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|M11007|1996-03-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17624","name":"Wright Bros Specialty Sands"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2000-07-01","validTo":"2007-06-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|L17624|2000-07-01|2007-06-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13441","name":"Mark  Wright et al"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2000-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|M13441|2000-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13441","name":"Mark  Wright et al"},"object":{"type":"operator","id":"L17624","name":"Wright Bros Specialty Sands"},"validFrom":"2000-07-01","validTo":"2007-06-04","current":false,"derived":true,"evidenceMineId":"4104182","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|L17624|2000-07-01|M13441|2000-07-01|156270"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13441","name":"Scott  Wright et al"},"object":{"type":"operator","id":"L17624","name":"Wright Bros Specialty Sands"},"validFrom":"2000-07-01","validTo":"2007-06-04","current":false,"derived":true,"evidenceMineId":"4104182","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|L17624|2000-07-01|M13441|2000-07-01|156271"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0082024","name":"NBR Sand, LLC"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2007-06-05","validTo":"2019-05-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|0082024|2007-06-05|2019-05-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0061877","name":"New Birmingham Incorporated"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2007-06-05","validTo":"2016-08-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|0061877|2007-06-05|2016-08-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0061877","name":"New Birmingham Incorporated"},"object":{"type":"operator","id":"0082024","name":"NBR Sand, LLC"},"validFrom":"2007-06-05","validTo":"2016-08-15","current":false,"derived":true,"evidenceMineId":"4104182","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|0082024|2007-06-05|0061877|2007-06-05|8368"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2016-08-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|M11007|2016-08-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"operator","id":"0082024","name":"NBR Sand, LLC"},"validFrom":"2016-08-16","validTo":"2019-05-16","current":false,"derived":true,"evidenceMineId":"4104182","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|0082024|2007-06-05|M11007|2016-08-16|150503"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14417","name":"U.S. Silica Company"},"object":{"type":"mine","id":"4104182","name":"Tyler Plant"},"validFrom":"2019-05-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|L14417|2019-05-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"operator","id":"L14417","name":"U.S. Silica Company"},"validFrom":"2019-05-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"4104182","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4104182|L14417|2019-05-17|M11007|1996-03-09|150493"}}],"coverage":{"historyRecords":5,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4104182","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"}}