{"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":"2026-10-18T09:31:49.615908+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":"4104071","name":"Wills Point Lester Plant 1655"},"operator":{"type":"operator","id":"0186653","name":"Arcosa Aggregates Texas, LLC"},"controller":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12591","name":"H Wade  Miller et al"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|M12591|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09571","name":"Trinity Industries Inc"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"1991-12-01","validTo":"2018-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|M09571|1991-12-01|2018-10-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16458","name":"Mc Kinney Crushing Company Inc"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"1999-02-01","validTo":"2002-12-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L16458|1999-02-01|2002-12-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12591","name":"H Wade  Miller et al"},"object":{"type":"operator","id":"L16458","name":"Mc Kinney Crushing Company Inc"},"validFrom":"1999-02-01","validTo":"2002-12-26","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L16458|1999-02-01|M12591|1950-01-01|154125"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12591","name":"Bobby  Pannkuk Sr et al"},"object":{"type":"operator","id":"L16458","name":"Mc Kinney Crushing Company Inc"},"validFrom":"1999-02-01","validTo":"2002-12-26","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L16458|1999-02-01|M12591|1950-01-01|154126"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0052247","name":"Rock Solid Crushed Stone, Inc."},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2002-12-27","validTo":"2010-11-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0052247|2002-12-27|2010-11-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043055","name":"Libby  Schroeder"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2002-12-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0043055|2002-12-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043055","name":"Libby  Schroeder"},"object":{"type":"operator","id":"0052247","name":"Rock Solid Crushed Stone, Inc."},"validFrom":"2002-12-27","validTo":"2010-11-09","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0052247|2002-12-27|0043055|2002-12-27|4436"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043055","name":"Bobby  Pannkuk Jr"},"object":{"type":"operator","id":"0052247","name":"Rock Solid Crushed Stone, Inc."},"validFrom":"2002-12-27","validTo":"2010-11-09","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0052247|2002-12-27|0043055|2002-12-27|4437"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13225","name":"Arcosa Aggregates, Inc."},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2010-11-10","validTo":"2022-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L13225|2010-11-10|2022-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09571","name":"Trinity Industries Inc"},"object":{"type":"operator","id":"L13225","name":"Arcosa Aggregates, Inc."},"validFrom":"2010-11-10","validTo":"2018-10-31","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L13225|2010-11-10|M09571|1991-12-01|146751"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2018-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0144281|2018-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"operator","id":"L13225","name":"Arcosa Aggregates, Inc."},"validFrom":"2018-11-01","validTo":"2022-12-31","current":false,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|L13225|2010-11-10|0144281|2018-11-01|29276"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0186653","name":"Arcosa Aggregates Texas, LLC"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2023-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0186653|2023-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"mine","id":"4104071","name":"Wills Point Lester Plant 1655"},"validFrom":"2023-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0144281|2023-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"operator","id":"0186653","name":"Arcosa Aggregates Texas, LLC"},"validFrom":"2023-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4104071","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4104071|0186653|2023-01-01|0144281|2023-01-01|29397"}}],"coverage":{"historyRecords":7,"edgeCount":16,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4104071","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}