{"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":"2026-10-18T09:31:49.615908+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":"1900567","name":"CHENIER'S GRAVEL BANK INC"},"operator":{"type":"operator","id":"L31754","name":"CHENIER'S GRAVEL BANK INC"},"controller":{"type":"controller","id":"0120381","name":"James  Chenier; John B Chenier"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L31754","name":"Chenier's Gravel Bank Inc"},"object":{"type":"mine","id":"1900567","name":"CHENIER'S GRAVEL BANK INC"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|L31754|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M31754","name":"Lawrence L  Chenier"},"object":{"type":"mine","id":"1900567","name":"CHENIER'S GRAVEL BANK INC"},"validFrom":"1950-01-01","validTo":"2015-09-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|M31754|1950-01-01|2015-09-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M31754","name":"Lawrence L  Chenier"},"object":{"type":"operator","id":"L31754","name":"Chenier's Gravel Bank Inc"},"validFrom":"1950-01-01","validTo":"2015-09-09","current":false,"derived":true,"evidenceMineId":"1900567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|L31754|1950-01-01|M31754|1950-01-01|160133"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0120381","name":"John B Chenier et al"},"object":{"type":"mine","id":"1900567","name":"CHENIER'S GRAVEL BANK INC"},"validFrom":"2015-09-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|0120381|2015-09-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120381","name":"John B Chenier et al"},"object":{"type":"operator","id":"L31754","name":"Chenier's Gravel Bank Inc"},"validFrom":"2015-09-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1900567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|L31754|1950-01-01|0120381|2015-09-10|23503"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120381","name":"James  Chenier et al"},"object":{"type":"operator","id":"L31754","name":"Chenier's Gravel Bank Inc"},"validFrom":"2015-09-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1900567","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1900567|L31754|1950-01-01|0120381|2015-09-10|23504"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1900567","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}