{"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":"1601070","name":"Woodworth Aggregates"},"operator":{"type":"operator","id":"0084984","name":"Martin Marietta Materials Southwest, LLC"},"controller":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00344","name":"Texas Industries Inc"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|M00344|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01221","name":"M D  Bryant Jr et al"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|M01221|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02641","name":"Mid State Sand & Gravel Company Inc"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"1985-11-01","validTo":"2000-06-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|L02641|1985-11-01|2000-06-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01221","name":"M D  Bryant Jr et al"},"object":{"type":"operator","id":"L02641","name":"Mid State Sand & Gravel Company Inc"},"validFrom":"1985-11-01","validTo":"2000-06-04","current":false,"derived":true,"evidenceMineId":"1601070","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|L02641|1985-11-01|M01221|1950-01-01|117557"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00418","name":"TXI (A/K/A Texas Industries Inc)"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2000-06-05","validTo":"2005-03-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|L00418|2000-06-05|2005-03-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00344","name":"Texas Industries Inc"},"object":{"type":"operator","id":"L00418","name":"TXI (A/K/A Texas Industries Inc)"},"validFrom":"2000-06-05","validTo":"2005-03-14","current":false,"derived":true,"evidenceMineId":"1601070","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|L00418|2000-06-05|M00344|1950-01-01|109620"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00344","name":"Texas Industries Inc"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2004-12-01","validTo":"2014-07-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|M00344|2004-12-01|2014-07-01"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0055718","name":"TXI Operations LP"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2005-03-15","validTo":"2023-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|0055718|2005-03-15|2023-04-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00344","name":"Texas Industries Inc"},"object":{"type":"operator","id":"0055718","name":"TXI Operations LP"},"validFrom":"2005-03-15","validTo":"2014-07-01","current":false,"derived":true,"evidenceMineId":"1601070","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|0055718|2005-03-15|M00344|2004-12-01|109685"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2007-11-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|M00174|2007-11-26|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2014-07-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|M00174|2014-07-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"0055718","name":"TXI Operations LP"},"validFrom":"2014-07-02","validTo":"2023-04-19","current":false,"derived":true,"evidenceMineId":"1601070","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|0055718|2005-03-15|M00174|2014-07-02|106475"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0084984","name":"Martin Marietta Materials Southwest, LLC"},"object":{"type":"mine","id":"1601070","name":"Woodworth Aggregates"},"validFrom":"2023-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|0084984|2023-04-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"0084984","name":"Martin Marietta Materials Southwest, LLC"},"validFrom":"2023-04-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601070","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601070|0084984|2023-04-20|M00174|2007-11-26|106423"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1601070","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"}}