{"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":"1513231","name":"Coal Mac #16 Surface"},"operator":{"type":"operator","id":"P20596","name":"Coal Mac Inc"},"controller":{"type":"controller","id":"0144441","name":"John Mitch Potter"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05822","name":"M Lynn  Parrish"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1979-09-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|C05822|1979-09-20|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12837","name":"L T & R Land & Coal Company Inc"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1981-11-01","validTo":"1983-04-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P12837|1981-11-01|1983-04-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01628","name":"Mitchell Tex-Lowell & Rex"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1981-11-01","validTo":"1983-04-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|C01628|1981-11-01|1983-04-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01628","name":"Mitchell Tex-Lowell & Rex"},"object":{"type":"operator","id":"P12837","name":"L T & R Land & Coal Company Inc"},"validFrom":"1981-11-01","validTo":"1983-04-28","current":false,"derived":true,"evidenceMineId":"1513231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P12837|1981-11-01|C01628|1981-11-01|55382"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14224","name":"Jaco Mining Company Inc"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1983-04-29","validTo":"1989-10-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P14224|1983-04-29|1989-10-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05822","name":"M Lynn  Parrish"},"object":{"type":"operator","id":"P14224","name":"Jaco Mining Company Inc"},"validFrom":"1983-04-29","validTo":"1989-10-18","current":false,"derived":true,"evidenceMineId":"1513231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P14224|1983-04-29|C05822|1979-09-20|69983"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20596","name":"Coal Mac Inc"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1989-10-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P20596|1989-10-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00012","name":"Ashland Inc et al"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1989-10-19","validTo":"1997-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|C00012|1989-10-19|1997-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00012","name":"Ashland Inc et al"},"object":{"type":"operator","id":"P20596","name":"Coal Mac Inc"},"validFrom":"1989-10-19","validTo":"1997-06-30","current":false,"derived":true,"evidenceMineId":"1513231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P20596|1989-10-19|C00012|1989-10-19|43407"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"1997-07-01","validTo":"2019-10-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|C15561|1997-07-01|2019-10-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"operator","id":"P20596","name":"Coal Mac Inc"},"validFrom":"1997-07-01","validTo":"2019-10-22","current":false,"derived":true,"evidenceMineId":"1513231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P20596|1989-10-19|C15561|1997-07-01|95979"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144441","name":"John Mitch Potter"},"object":{"type":"mine","id":"1513231","name":"Coal Mac #16 Surface"},"validFrom":"2019-10-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|0144441|2019-10-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144441","name":"John Mitch Potter"},"object":{"type":"operator","id":"P20596","name":"Coal Mac Inc"},"validFrom":"2019-10-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"1513231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1513231|P20596|1989-10-19|0144441|2019-10-23|29461"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1513231","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"}}