{"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":"2026-10-13T11:19:05.459773+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":"4300605","name":"Elcon Pit"},"operator":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"controller":{"type":"controller","id":"0172081","name":"R Daniel  Heath; Marie M  Heath; Andrew D  Heath"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"object":{"type":"mine","id":"4300605","name":"Elcon Pit"},"validFrom":"2004-05-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043703","name":"Marie M  Heath et al"},"object":{"type":"mine","id":"4300605","name":"Elcon Pit"},"validFrom":"2004-05-19","validTo":"2022-10-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0043703|2004-05-19|2022-10-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043703","name":"Marie M  Heath et al"},"object":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"validFrom":"2004-05-19","validTo":"2022-10-10","current":false,"derived":true,"evidenceMineId":"4300605","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|0043703|2004-05-19|4774"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043703","name":"Raymond J  Heath et al"},"object":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"validFrom":"2004-05-19","validTo":"2022-10-10","current":false,"derived":true,"evidenceMineId":"4300605","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|0043703|2004-05-19|4775"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0172081","name":"Andrew D  Heath"},"object":{"type":"mine","id":"4300605","name":"Elcon Pit"},"validFrom":"2022-10-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0172081|2022-10-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172081","name":"Andrew D  Heath"},"object":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"validFrom":"2022-10-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300605","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|0172081|2022-10-11|36599"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172081","name":"R Daniel  Heath et al"},"object":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"validFrom":"2022-10-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300605","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|0172081|2022-10-11|36600"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172081","name":"Marie M  Heath et al"},"object":{"type":"operator","id":"0052873","name":"Raymond Heath Construction, Inc."},"validFrom":"2022-10-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300605","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300605|0052873|2004-05-19|0172081|2022-10-11|36601"}}],"coverage":{"historyRecords":5,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4300605","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}