{"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":"0600582","name":"American Heritage Stone Incorporated"},"operator":{"type":"operator","id":"L09732","name":"American Heritage Stone Inc"},"controller":{"type":"controller","id":"M07626","name":"Lawler Peter"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08008","name":"Bolton Notch Quarry Company"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1978-03-09","validTo":"1985-06-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L08008|1978-03-09|1985-06-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06367","name":"Gonder Henry"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1978-03-09","validTo":"1985-06-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|M06367|1978-03-09|1985-06-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06367","name":"Gonder Henry"},"object":{"type":"operator","id":"L08008","name":"Bolton Notch Quarry Company"},"validFrom":"1978-03-09","validTo":"1985-06-16","current":false,"derived":true,"evidenceMineId":"0600582","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L08008|1978-03-09|M06367|1978-03-09|138365"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08009","name":"Bolton Stone Inc"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1985-06-17","validTo":"1987-06-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L08009|1985-06-17|1987-06-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06368","name":"Maker David P"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1985-06-17","validTo":"1987-06-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|M06368|1985-06-17|1987-06-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06368","name":"Maker David P"},"object":{"type":"operator","id":"L08009","name":"Bolton Stone Inc"},"validFrom":"1985-06-17","validTo":"1987-06-03","current":false,"derived":true,"evidenceMineId":"0600582","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L08009|1985-06-17|M06368|1985-06-17|138366"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09732","name":"American Heritage Stone Inc"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1987-06-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L09732|1987-06-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07626","name":"Lawler Peter"},"object":{"type":"mine","id":"0600582","name":"American Heritage Stone Incorporated"},"validFrom":"1987-06-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|M07626|1987-06-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07626","name":"Lawler Peter"},"object":{"type":"operator","id":"L09732","name":"American Heritage Stone Inc"},"validFrom":"1987-06-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"0600582","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600582|L09732|1987-06-04|M07626|1987-06-04|141692"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0600582","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"}}