{"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":"0300136","name":"Proctor Plant # 1670"},"operator":{"type":"operator","id":"0137693","name":"TRN LW BR, LLC."},"controller":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00374","name":"Arkansas Lightweight Aggregate Corp"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"1950-01-01","validTo":"1986-06-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L00374|1950-01-01|1986-06-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00309","name":"General Shale Products Corp"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"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":"0300136|M00309|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00309","name":"General Shale Products Corp"},"object":{"type":"operator","id":"L00374","name":"Arkansas Lightweight Aggregate Corp"},"validFrom":"1950-01-01","validTo":"1986-06-29","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L00374|1950-01-01|M00309|1950-01-01|109251"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09534","name":"General Shale Products Corp"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"1986-06-30","validTo":"2001-10-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L09534|1986-06-30|2001-10-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07480","name":"Marley Plc"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"1986-06-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|M07480|1986-06-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07480","name":"Marley Plc"},"object":{"type":"operator","id":"L09534","name":"General Shale Products Corp"},"validFrom":"1986-06-30","validTo":"2001-10-16","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L09534|1986-06-30|M07480|1986-06-30|141350"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"1987-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|M06183|1987-10-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050914","name":"Arkalite Division of General Shale LLC"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2001-10-17","validTo":"2004-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0050914|2001-10-17|2004-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13043","name":"Wienerberger AG"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2001-10-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|M13043|2001-10-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13043","name":"Wienerberger AG"},"object":{"type":"operator","id":"0050914","name":"Arkalite Division of General Shale LLC"},"validFrom":"2001-10-17","validTo":"2004-06-30","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0050914|2001-10-17|M13043|2001-10-17|155238"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13043","name":"Wienerberger AG"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2002-07-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|M13043|2002-07-19|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0057717","name":"General Shale Brick, Inc."},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2004-07-01","validTo":"2005-11-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0057717|2004-07-01|2005-11-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13043","name":"Wienerberger AG"},"object":{"type":"operator","id":"0057717","name":"General Shale Brick, Inc."},"validFrom":"2004-07-01","validTo":"2005-11-18","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0057717|2004-07-01|M13043|2002-07-19|155245"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09995","name":"Big River Industries Incorporated"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2005-11-19","validTo":"2015-03-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L09995|2005-11-19|2015-03-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L09995","name":"Big River Industries Incorporated"},"validFrom":"2005-11-19","validTo":"2015-03-19","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|L09995|2005-11-19|M06183|1987-10-01|136519"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0137693","name":"TRN LW BR, LLC."},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2015-03-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0137693|2015-03-20|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09571","name":"Trinity Industries Inc"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2015-03-20","validTo":"2018-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|M09571|2015-03-20|2018-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09571","name":"Trinity Industries Inc"},"object":{"type":"operator","id":"0137693","name":"TRN LW BR, LLC."},"validFrom":"2015-03-20","validTo":"2018-10-31","current":false,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0137693|2015-03-20|M09571|2015-03-20|146744"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"mine","id":"0300136","name":"Proctor Plant # 1670"},"validFrom":"2018-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0144281|2018-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"operator","id":"0137693","name":"TRN LW BR, LLC."},"validFrom":"2018-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0300136","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0300136|0137693|2015-03-20|0144281|2018-11-01|29227"}}],"coverage":{"historyRecords":7,"edgeCount":20,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0300136","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"}}