{"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":"5001282","name":"Conrock North Pit"},"operator":{"type":"operator","id":"L00039","name":"Granite Construction Company"},"controller":{"type":"controller","id":"M00079","name":"Granite Construction Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00079","name":"Granite Construction Inc"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"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":"5001282|M00079|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01171","name":"Donald M  March et al"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"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":"5001282|M01171|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04677","name":"Conrock Company Inc"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1979-01-01","validTo":"1980-10-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L04677|1979-01-01|1980-10-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03774","name":"Conrock Company Inc"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1979-01-01","validTo":"1980-10-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|M03774|1979-01-01|1980-10-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03774","name":"Conrock Company Inc"},"object":{"type":"operator","id":"L04677","name":"Conrock Company Inc"},"validFrom":"1979-01-01","validTo":"1980-10-28","current":false,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L04677|1979-01-01|M03774|1979-01-01|130044"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01041","name":"Mapco Inc"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1980-04-01","validTo":"1985-09-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|M01041|1980-04-01|1985-09-19"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04678","name":"Central Paving Products"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1980-10-29","validTo":"1985-09-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L04678|1980-10-29|1985-09-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01041","name":"Mapco Inc"},"object":{"type":"operator","id":"L04678","name":"Central Paving Products"},"validFrom":"1980-10-29","validTo":"1985-09-19","current":false,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L04678|1980-10-29|M01041|1980-04-01|116542"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06390","name":"Phil  Godfrey et al"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1985-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|M06390|1985-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08039","name":"Rogers & Babler"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1985-09-20","validTo":"1987-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L08039|1985-09-20|1987-08-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06390","name":"Phil  Godfrey et al"},"object":{"type":"operator","id":"L08039","name":"Rogers & Babler"},"validFrom":"1985-09-20","validTo":"1987-08-27","current":false,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L08039|1985-09-20|M06390|1985-09-01|138407"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06390","name":"Barclay  Tollefson et al"},"object":{"type":"operator","id":"L08039","name":"Rogers & Babler"},"validFrom":"1985-09-20","validTo":"1987-08-27","current":false,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L08039|1985-09-20|M06390|1985-09-01|138408"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01325","name":"Wilder Construction Company"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"1987-08-28","validTo":"2008-04-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L01325|1987-08-28|2008-04-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01171","name":"Donald M  March et al"},"object":{"type":"operator","id":"L01325","name":"Wilder Construction Company"},"validFrom":"1987-08-28","validTo":"2008-04-03","current":false,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L01325|1987-08-28|M01171|1950-01-01|117197"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00039","name":"Granite Construction Company"},"object":{"type":"mine","id":"5001282","name":"Conrock North Pit"},"validFrom":"2008-04-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L00039|2008-04-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00079","name":"Granite Construction Inc"},"object":{"type":"operator","id":"L00039","name":"Granite Construction Company"},"validFrom":"2008-04-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"5001282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001282|L00039|2008-04-04|M00079|1950-01-01|103687"}}],"coverage":{"historyRecords":6,"edgeCount":16,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5001282","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"}}