{"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":"2400482","name":"Mc Quarrie Quarry"},"operator":{"type":"operator","id":"L13605","name":"Meridian Aggregates Company"},"controller":{"type":"controller","id":"M09944","name":"Meridian Aggregates Company LP"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03208","name":"Janney Construction Company Inc"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1950-01-01","validTo":"1987-04-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L03208|1950-01-01|1987-04-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02585","name":"Janney Ed"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|M02585|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02585","name":"Janney Ed"},"object":{"type":"operator","id":"L03208","name":"Janney Construction Company Inc"},"validFrom":"1950-01-01","validTo":"1987-04-09","current":false,"derived":true,"evidenceMineId":"2400482","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L03208|1950-01-01|M02585|1950-01-01|126133"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00722","name":"James W  Weaver et al"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1986-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|M00722|1986-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09497","name":"Weaver Stone Products Company"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1987-04-10","validTo":"1993-02-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L09497|1987-04-10|1993-02-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00722","name":"James W  Weaver et al"},"object":{"type":"operator","id":"L09497","name":"Weaver Stone Products Company"},"validFrom":"1987-04-10","validTo":"1993-02-28","current":false,"derived":true,"evidenceMineId":"2400482","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L09497|1987-04-10|M00722|1986-06-01|114450"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09944","name":"Meridian Aggregates Company LP"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1991-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|M09944|1991-03-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13605","name":"Meridian Aggregates Company"},"object":{"type":"mine","id":"2400482","name":"Mc Quarrie Quarry"},"validFrom":"1993-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L13605|1993-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09944","name":"Meridian Aggregates Company LP"},"object":{"type":"operator","id":"L13605","name":"Meridian Aggregates Company"},"validFrom":"1993-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2400482","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2400482|L13605|1993-03-01|M09944|1991-03-01|147954"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2400482","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"}}