{"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":"2000807","name":"TayCon Properties, LLC"},"operator":{"type":"operator","id":"0103146","name":"Taylor Construction Services, Inc"},"controller":{"type":"controller","id":"0087255","name":"David V  Taylor II"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L32483","name":"DeBoer Materials, Inc"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"validFrom":"1950-01-01","validTo":"2006-02-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|L32483|1950-01-01|2006-02-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M32483","name":"Celia A  De Boer"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"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":"2000807|M32483|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M32483","name":"Celia A  De Boer"},"object":{"type":"operator","id":"L32483","name":"DeBoer Materials, Inc"},"validFrom":"1950-01-01","validTo":"2006-02-28","current":false,"derived":true,"evidenceMineId":"2000807","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|L32483|1950-01-01|M32483|1950-01-01|160939"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0076484","name":"D & M Contracting & Materials"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"validFrom":"2006-03-01","validTo":"2009-06-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0076484|2006-03-01|2009-06-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0064231","name":"Andrew T.  DeBoer"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"validFrom":"2006-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0064231|2006-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0064231","name":"Andrew T.  DeBoer"},"object":{"type":"operator","id":"0076484","name":"D & M Contracting & Materials"},"validFrom":"2006-03-01","validTo":"2009-06-16","current":false,"derived":true,"evidenceMineId":"2000807","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0076484|2006-03-01|0064231|2006-03-01|8801"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0103146","name":"Taylor Construction Services, Inc"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"validFrom":"2009-06-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0103146|2009-06-17|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0087255","name":"David V  Taylor II"},"object":{"type":"mine","id":"2000807","name":"TayCon Properties, LLC"},"validFrom":"2009-06-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0087255|2009-06-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0087255","name":"David V  Taylor II"},"object":{"type":"operator","id":"0103146","name":"Taylor Construction Services, Inc"},"validFrom":"2009-06-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"2000807","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000807|0103146|2009-06-17|0087255|2009-06-17|14051"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2000807","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"}}