{"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":"3603157","name":"MT CYDONIA SAND PLANT III"},"operator":{"type":"operator","id":"L00335","name":"New Enterprise Stone and Lime Co, Inc"},"controller":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|M00271|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09817","name":"C & L Goodhart Sand & Gravel"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1950-01-01","validTo":"1987-08-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L09817|1950-01-01|1987-08-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07699","name":"Maurice H  Ramond"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1950-01-01","validTo":"1987-08-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|M07699|1950-01-01|1987-08-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07699","name":"Maurice H  Ramond"},"object":{"type":"operator","id":"L09817","name":"C & L Goodhart Sand & Gravel"},"validFrom":"1950-01-01","validTo":"1987-08-24","current":false,"derived":true,"evidenceMineId":"3603157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L09817|1950-01-01|M07699|1950-01-01|141816"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09818","name":"Rimac Inc"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1987-08-25","validTo":"1994-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L09818|1987-08-25|1994-11-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07700","name":"Furnley H  Frisch"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1987-08-25","validTo":"1994-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|M07700|1987-08-25|1994-11-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07700","name":"Furnley H  Frisch"},"object":{"type":"operator","id":"L09818","name":"Rimac Inc"},"validFrom":"1987-08-25","validTo":"1994-11-30","current":false,"derived":true,"evidenceMineId":"3603157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L09818|1987-08-25|M07700|1987-08-25|141817"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14095","name":"Nep Sand & Gravel Inc"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1994-12-01","validTo":"1997-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L14095|1994-12-01|1997-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10771","name":"Dennis M Grimm"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1994-12-01","validTo":"1997-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|M10771|1994-12-01|1997-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10771","name":"Dennis M Grimm"},"object":{"type":"operator","id":"L14095","name":"Nep Sand & Gravel Inc"},"validFrom":"1994-12-01","validTo":"1997-05-31","current":false,"derived":true,"evidenceMineId":"3603157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L14095|1994-12-01|M10771|1994-12-01|149997"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01879","name":"Valley Quarries Inc"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"1997-06-01","validTo":"2010-08-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L01879|1997-06-01|2010-08-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"object":{"type":"operator","id":"L01879","name":"Valley Quarries Inc"},"validFrom":"1997-06-01","validTo":"2010-08-04","current":false,"derived":true,"evidenceMineId":"3603157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L01879|1997-06-01|M00271|1950-01-01|108711"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00335","name":"New Enterprise Stone and Lime Co, Inc"},"object":{"type":"mine","id":"3603157","name":"MT CYDONIA SAND PLANT III"},"validFrom":"2010-08-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L00335|2010-08-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"object":{"type":"operator","id":"L00335","name":"New Enterprise Stone and Lime Co, Inc"},"validFrom":"2010-08-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"3603157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3603157|L00335|2010-08-05|M00271|1950-01-01|108712"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3603157","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"}}