{"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":"4201452","name":"Beck Street"},"operator":{"type":"operator","id":"0050765","name":"Staker & Parson Companies"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02442","name":"Staker Paving & Construction Company Inc"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"validFrom":"1950-01-01","validTo":"1995-07-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|L02442|1950-01-01|1995-07-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02128","name":"S Val  Staker"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"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":"4201452|M02128|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02128","name":"S Val  Staker"},"object":{"type":"operator","id":"L02442","name":"Staker Paving & Construction Company Inc"},"validFrom":"1950-01-01","validTo":"1995-07-25","current":false,"derived":true,"evidenceMineId":"4201452","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|L02442|1950-01-01|M02128|1950-01-01|123870"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14697","name":"Staker Paving & Construction Company Inc"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"validFrom":"1995-07-26","validTo":"2002-12-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|L14697|1995-07-26|2002-12-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"validFrom":"1995-07-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|M06183|1995-07-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L14697","name":"Staker Paving & Construction Company Inc"},"validFrom":"1995-07-26","validTo":"2002-12-12","current":false,"derived":true,"evidenceMineId":"4201452","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|L14697|1995-07-26|M06183|1995-07-26|136644"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"validFrom":"2002-05-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|M06183|2002-05-30|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050765","name":"Staker & Parson Companies"},"object":{"type":"mine","id":"4201452","name":"Beck Street"},"validFrom":"2002-12-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|0050765|2002-12-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"0050765","name":"Staker & Parson Companies"},"validFrom":"2002-12-13","validTo":null,"current":true,"derived":true,"evidenceMineId":"4201452","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201452|0050765|2002-12-13|M06183|2002-05-30|137010"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4201452","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"}}