{"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":"4406432","name":"Greenbriar Creek Surface Mine"},"operator":{"type":"operator","id":"P17471","name":"Motivation Coal Company"},"controller":{"type":"controller","id":"C00230","name":"Pittston Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00230","name":"Pittston Company"},"object":{"type":"mine","id":"4406432","name":"Greenbriar Creek Surface Mine"},"validFrom":"1985-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|C00230|1985-10-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19200","name":"Interstate Carbon Corp"},"object":{"type":"mine","id":"4406432","name":"Greenbriar Creek Surface Mine"},"validFrom":"1987-11-01","validTo":"1992-09-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|P19200|1987-11-01|1992-09-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09426","name":"Yates Elzie"},"object":{"type":"mine","id":"4406432","name":"Greenbriar Creek Surface Mine"},"validFrom":"1987-11-01","validTo":"1992-09-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|C09426|1987-11-01|1992-09-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09426","name":"Yates Elzie"},"object":{"type":"operator","id":"P19200","name":"Interstate Carbon Corp"},"validFrom":"1987-11-01","validTo":"1992-09-02","current":false,"derived":true,"evidenceMineId":"4406432","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|P19200|1987-11-01|C09426|1987-11-01|79656"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17471","name":"Motivation Coal Company"},"object":{"type":"mine","id":"4406432","name":"Greenbriar Creek Surface Mine"},"validFrom":"1992-09-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|P17471|1992-09-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00230","name":"Pittston Company"},"object":{"type":"operator","id":"P17471","name":"Motivation Coal Company"},"validFrom":"1992-09-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"4406432","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406432|P17471|1992-09-03|C00230|1985-10-01|45265"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4406432","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"}}