{"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":"3503284","name":"Crusher Dawgs Inc"},"operator":{"type":"operator","id":"L16253","name":"Crusher Dawgs Inc"},"controller":{"type":"controller","id":"M07398","name":"Michael L  Houck"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07398","name":"Michael L  Houck"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1985-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|M07398|1985-07-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09424","name":"M L Houck Construction Company Inc"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1987-04-01","validTo":"1992-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L09424|1987-04-01|1992-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07398","name":"Michael L  Houck"},"object":{"type":"operator","id":"L09424","name":"M L Houck Construction Company Inc"},"validFrom":"1987-04-01","validTo":"1992-09-30","current":false,"derived":true,"evidenceMineId":"3503284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L09424|1987-04-01|M07398|1985-07-01|141204"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13028","name":"T B Inc"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1992-10-01","validTo":"1998-04-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L13028|1992-10-01|1998-04-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09964","name":"Pamela  Houck"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1992-10-01","validTo":"1998-04-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|M09964|1992-10-01|1998-04-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09964","name":"Pamela  Houck"},"object":{"type":"operator","id":"L13028","name":"T B Inc"},"validFrom":"1992-10-01","validTo":"1998-04-09","current":false,"derived":true,"evidenceMineId":"3503284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L13028|1992-10-01|M09964|1992-10-01|148045"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16253","name":"Crusher Dawgs Inc"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1998-04-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L16253|1998-04-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07398","name":"Michael L  Houck"},"object":{"type":"mine","id":"3503284","name":"Crusher Dawgs Inc"},"validFrom":"1998-04-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|M07398|1998-04-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07398","name":"Michael L  Houck"},"object":{"type":"operator","id":"L16253","name":"Crusher Dawgs Inc"},"validFrom":"1998-04-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"3503284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503284|L16253|1998-04-10|M07398|1998-04-10|141205"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3503284","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"}}