{"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":"3102052","name":"MARSTON PIT"},"operator":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"controller":{"type":"controller","id":"0186024","name":"Shelly  Bell; Vera  Bradsher"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L34661","name":"J Morgan Enterprises"},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"1990-05-01","validTo":"2019-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|L34661|1990-05-01|2019-10-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M34661","name":"Phyllis H  Morgan et al"},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"1990-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|M34661|1990-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M34661","name":"Phyllis H  Morgan et al"},"object":{"type":"operator","id":"L34661","name":"J Morgan Enterprises"},"validFrom":"1990-05-01","validTo":"2019-10-31","current":false,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|L34661|1990-05-01|M34661|1990-05-01|163463"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M34661","name":"James D  Morgan Jr et al"},"object":{"type":"operator","id":"L34661","name":"J Morgan Enterprises"},"validFrom":"1990-05-01","validTo":"2019-10-31","current":false,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|L34661|1990-05-01|M34661|1990-05-01|163464"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0100025","name":"Vera W  Bradsher et al"},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"2011-04-26","validTo":"2021-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0100025|2011-04-26|2021-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"2019-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0100025","name":"Vera W  Bradsher et al"},"object":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"validFrom":"2019-11-01","validTo":"2021-09-30","current":false,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|0100025|2011-04-26|16646"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0100025","name":"Robert L  Bradsher et al"},"object":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"validFrom":"2019-11-01","validTo":"2021-09-30","current":false,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|0100025|2011-04-26|16647"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0165001","name":"Robert L. Bradsher Family Trust"},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"2021-10-01","validTo":"2024-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0165001|2021-10-01|2024-07-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0165001","name":"Robert L. Bradsher Family Trust"},"object":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"validFrom":"2021-10-01","validTo":"2024-07-14","current":false,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|0165001|2021-10-01|34560"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0186024","name":"Vera  Bradsher et al"},"object":{"type":"mine","id":"3102052","name":"MARSTON PIT"},"validFrom":"2024-07-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0186024|2024-07-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0186024","name":"Vera  Bradsher et al"},"object":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"validFrom":"2024-07-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|0186024|2024-07-15|39691"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0186024","name":"Shelly  Bell et al"},"object":{"type":"operator","id":"0118068","name":"R.L. BRADSHER CONTRACTING INC."},"validFrom":"2024-07-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102052|0118068|2019-11-01|0186024|2024-07-15|39692"}}],"coverage":{"historyRecords":7,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3102052","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"}}