{"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":"2026-10-17T05:35:58.500035+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":"2602347","name":"PABCO SAND/GRAVEL"},"operator":{"type":"operator","id":"0051135","name":"Sandia Aggregates - PABCO Building Products LLC"},"controller":{"type":"controller","id":"M00829","name":"Pacific Coast Building Products Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15878","name":"Sandia Construction Inc."},"object":{"type":"mine","id":"2602347","name":"PABCO SAND/GRAVEL"},"validFrom":"1998-04-01","validTo":"2002-05-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|L15878|1998-04-01|2002-05-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10624","name":"U S Aggregate Inc"},"object":{"type":"mine","id":"2602347","name":"PABCO SAND/GRAVEL"},"validFrom":"1998-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|M10624|1998-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10624","name":"U S Aggregate Inc"},"object":{"type":"operator","id":"L15878","name":"Sandia Construction Inc."},"validFrom":"1998-04-01","validTo":"2002-05-28","current":false,"derived":true,"evidenceMineId":"2602347","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|L15878|1998-04-01|M10624|1998-04-01|149719"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051135","name":"Sandia Aggregates - PABCO Building Products LLC"},"object":{"type":"mine","id":"2602347","name":"PABCO SAND/GRAVEL"},"validFrom":"2002-05-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|0051135|2002-05-29|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00829","name":"Pacific Coast Building Products Inc"},"object":{"type":"mine","id":"2602347","name":"PABCO SAND/GRAVEL"},"validFrom":"2002-05-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|M00829|2002-05-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00829","name":"Pacific Coast Building Products Inc"},"object":{"type":"operator","id":"0051135","name":"Sandia Aggregates - PABCO Building Products LLC"},"validFrom":"2002-05-29","validTo":null,"current":true,"derived":true,"evidenceMineId":"2602347","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2602347|0051135|2002-05-29|M00829|2002-05-29|115141"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2602347","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}