{"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":"5400374","name":"Cantera Carolina  Pta #3"},"operator":{"type":"operator","id":"L03225","name":"Master Aggregates Toa Baja Corp"},"controller":{"type":"controller","id":"M02386","name":"Ricardo  Cardona; Victor S  Maldonado"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02386","name":"Victor S  Maldonado  et al"},"object":{"type":"mine","id":"5400374","name":"Cantera Carolina  Pta #3"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|M02386|1979-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15796","name":"Empresas Master"},"object":{"type":"mine","id":"5400374","name":"Cantera Carolina  Pta #3"},"validFrom":"1995-10-01","validTo":"2006-09-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L15796|1995-10-01|2006-09-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02386","name":"Ricardo  Cardona et al"},"object":{"type":"mine","id":"5400374","name":"Cantera Carolina  Pta #3"},"validFrom":"1995-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|M02386|1995-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Ricardo  Cardona et al"},"object":{"type":"operator","id":"L15796","name":"Empresas Master"},"validFrom":"1995-10-01","validTo":"2006-09-28","current":false,"derived":true,"evidenceMineId":"5400374","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L15796|1995-10-01|M02386|1995-10-01|125070"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Victor S  Maldonado  et al"},"object":{"type":"operator","id":"L15796","name":"Empresas Master"},"validFrom":"1995-10-01","validTo":"2006-09-28","current":false,"derived":true,"evidenceMineId":"5400374","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L15796|1995-10-01|M02386|1995-10-01|125071"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03225","name":"Master Aggregates Toa Baja Corp"},"object":{"type":"mine","id":"5400374","name":"Cantera Carolina  Pta #3"},"validFrom":"2006-09-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L03225|2006-09-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Victor S  Maldonado  et al"},"object":{"type":"operator","id":"L03225","name":"Master Aggregates Toa Baja Corp"},"validFrom":"2006-09-29","validTo":null,"current":true,"derived":true,"evidenceMineId":"5400374","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L03225|2006-09-29|M02386|1979-01-01|125062"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Ricardo  Cardona et al"},"object":{"type":"operator","id":"L03225","name":"Master Aggregates Toa Baja Corp"},"validFrom":"2006-09-29","validTo":null,"current":true,"derived":true,"evidenceMineId":"5400374","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400374|L03225|2006-09-29|M02386|1979-01-01|125063"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5400374","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"}}