{"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":"5400275","name":"Cantera Caguas Pta 5"},"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":"Ricardo  Cardona et al"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"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":"5400275|M02386|1979-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09960","name":"Marmoles Paonazzo Inc"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"validFrom":"1984-04-01","validTo":"1987-12-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L09960|1984-04-01|1987-12-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01064","name":"Rexco Industries Inc"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"validFrom":"1984-04-01","validTo":"1987-12-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|M01064|1984-04-01|1987-12-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01064","name":"Rexco Industries Inc"},"object":{"type":"operator","id":"L09960","name":"Marmoles Paonazzo Inc"},"validFrom":"1984-04-01","validTo":"1987-12-30","current":false,"derived":true,"evidenceMineId":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L09960|1984-04-01|M01064|1984-04-01|116671"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09961","name":"Marmoles Paonazzo Inc"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"validFrom":"1987-12-31","validTo":"1998-02-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L09961|1987-12-31|1998-02-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07806","name":"Hector M  Cintron"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"validFrom":"1987-12-31","validTo":"1998-02-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|M07806|1987-12-31|1998-02-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07806","name":"Hector M  Cintron"},"object":{"type":"operator","id":"L09961","name":"Marmoles Paonazzo Inc"},"validFrom":"1987-12-31","validTo":"1998-02-22","current":false,"derived":true,"evidenceMineId":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L09961|1987-12-31|M07806|1987-12-31|142010"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02386","name":"Victor S  Maldonado  et al"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"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":"5400275|M02386|1995-10-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15796","name":"Empresas Master"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"validFrom":"1998-02-23","validTo":"2006-09-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L15796|1998-02-23|2006-09-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Victor S  Maldonado  et al"},"object":{"type":"operator","id":"L15796","name":"Empresas Master"},"validFrom":"1998-02-23","validTo":"2006-09-28","current":false,"derived":true,"evidenceMineId":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L15796|1998-02-23|M02386|1995-10-01|125068"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02386","name":"Ricardo  Cardona et al"},"object":{"type":"operator","id":"L15796","name":"Empresas Master"},"validFrom":"1998-02-23","validTo":"2006-09-28","current":false,"derived":true,"evidenceMineId":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L15796|1998-02-23|M02386|1995-10-01|125069"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03225","name":"Master Aggregates Toa Baja Corp"},"object":{"type":"mine","id":"5400275","name":"Cantera Caguas Pta 5"},"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":"5400275|L03225|2006-09-29|"}},{"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":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L03225|2006-09-29|M02386|1979-01-01|125058"}},{"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":"5400275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5400275|L03225|2006-09-29|M02386|1979-01-01|125059"}}],"coverage":{"historyRecords":6,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5400275","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"}}