{"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":"2026-10-18T09:31:49.615908+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":"4103347","name":"C & P SAND & GRAVEL, INC."},"operator":{"type":"operator","id":"0055777","name":"C & P SAND & GRAVEL, INC."},"controller":{"type":"controller","id":"0046349","name":"Eleazar  Cantu"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08299","name":"Nueces Materials Inc"},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"1985-11-01","validTo":"1990-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|L08299|1985-11-01|1990-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00845","name":"B Curtis  Smith"},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"1985-11-01","validTo":"1990-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|M00845|1985-11-01|1990-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00845","name":"B Curtis  Smith"},"object":{"type":"operator","id":"L08299","name":"Nueces Materials Inc"},"validFrom":"1985-11-01","validTo":"1990-05-31","current":false,"derived":true,"evidenceMineId":"4103347","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|L08299|1985-11-01|M00845|1985-11-01|115351"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11768","name":"H & H Sand & Gravel Inc"},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"1990-06-01","validTo":"2004-06-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|L11768|1990-06-01|2004-06-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09083","name":"Anna J  Hand"},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"1990-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|M09083|1990-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09083","name":"Anna J  Hand"},"object":{"type":"operator","id":"L11768","name":"H & H Sand & Gravel Inc"},"validFrom":"1990-06-01","validTo":"2004-06-13","current":false,"derived":true,"evidenceMineId":"4103347","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|L11768|1990-06-01|M09083|1990-06-01|145086"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0055777","name":"C & P SAND & GRAVEL, INC."},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"2004-06-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|0055777|2004-06-14|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0046349","name":"Eleazar  Cantu  et al"},"object":{"type":"mine","id":"4103347","name":"C & P SAND & GRAVEL, INC."},"validFrom":"2004-06-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|0046349|2004-06-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0046349","name":"Eleazar  Cantu  et al"},"object":{"type":"operator","id":"0055777","name":"C & P SAND & GRAVEL, INC."},"validFrom":"2004-06-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"4103347","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4103347|0055777|2004-06-14|0046349|2004-06-14|5634"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4103347","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}