{"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":"3800567","name":"Pelham Quarry"},"operator":{"type":"operator","id":"L16897","name":"Heidelberg Materials Southeast Agg., LLC"},"controller":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10981","name":"Pelham Stone Company"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1980-05-01","validTo":"1989-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L10981|1980-05-01|1989-05-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08504","name":"Charles L Satterfield"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1980-05-01","validTo":"1989-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|M08504|1980-05-01|1989-05-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08504","name":"Charles L Satterfield"},"object":{"type":"operator","id":"L10981","name":"Pelham Stone Company"},"validFrom":"1980-05-01","validTo":"1989-05-10","current":false,"derived":true,"evidenceMineId":"3800567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L10981|1980-05-01|M08504|1980-05-01|143529"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1988-11-14","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|M00521|1988-11-14|2007-08-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1988-11-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|M00521|1988-11-14|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04321","name":"Pioneer International Ltd"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1989-01-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|M04321|1989-01-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16199","name":"Pioneer Mid-Atlantic Inc"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"1989-05-11","validTo":"2000-08-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16199|1989-05-11|2000-08-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04321","name":"Pioneer International Ltd"},"object":{"type":"operator","id":"L16199","name":"Pioneer Mid-Atlantic Inc"},"validFrom":"1989-05-11","validTo":"2000-08-03","current":false,"derived":true,"evidenceMineId":"3800567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16199|1989-05-11|M04321|1989-01-16|131721"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16323","name":"Hanson Aggregates East Inc"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"2000-08-04","validTo":"2001-09-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16323|2000-08-04|2001-09-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16323","name":"Hanson Aggregates East Inc"},"validFrom":"2000-08-04","validTo":"2001-09-12","current":false,"derived":true,"evidenceMineId":"3800567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16323|2000-08-04|M00521|1988-11-14|112479"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16897","name":"Heidelberg Materials Southeast Agg., LLC"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"2001-09-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16897|2001-09-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16897","name":"Heidelberg Materials Southeast Agg., LLC"},"validFrom":"2001-09-13","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"3800567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16897|2001-09-13|M00521|1988-11-14|112381"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"mine","id":"3800567","name":"Pelham Quarry"},"validFrom":"2007-08-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|M00004|2007-08-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L16897","name":"Heidelberg Materials Southeast Agg., LLC"},"validFrom":"2007-08-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"3800567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3800567|L16897|2001-09-13|M00004|2007-08-23|101003"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3800567","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"}}