{"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":"4406762","name":"Kennedy #3"},"operator":{"type":"operator","id":"0146035","name":"Ramaco Resources Land Holdings, LLC"},"controller":{"type":"controller","id":"0137341","name":"Ramaco Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09013","name":"Jerry  Skeens  et al"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"1982-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|C09013|1982-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12819","name":"C S & S Coal Corp"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"1994-10-01","validTo":"1998-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P12819|1994-10-01|1998-07-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09013","name":"Jerry  Skeens  et al"},"object":{"type":"operator","id":"P12819","name":"C S & S Coal Corp"},"validFrom":"1994-10-01","validTo":"1998-07-09","current":false,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P12819|1994-10-01|C09013|1982-01-01|78687"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09013","name":"Eddie  Skeens  et al"},"object":{"type":"operator","id":"P12819","name":"C S & S Coal Corp"},"validFrom":"1994-10-01","validTo":"1998-07-09","current":false,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P12819|1994-10-01|C09013|1982-01-01|78688"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"1997-08-26","validTo":"2011-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|C02508|1997-08-26|2011-05-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23902","name":"Knox Creek Coal Corporation"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"1998-07-10","validTo":"2022-03-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P23902|1998-07-10|2022-03-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P23902","name":"Knox Creek Coal Corporation"},"validFrom":"1998-07-10","validTo":"2011-05-31","current":false,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P23902|1998-07-10|C02508|1997-08-26|59470"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"2011-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0041211|2011-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"P23902","name":"Knox Creek Coal Corporation"},"validFrom":"2011-06-01","validTo":"2022-03-29","current":false,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|P23902|1998-07-10|0041211|2011-06-01|2283"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0104377","name":"Michael D Bauersachs"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"2016-07-01","validTo":"2016-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0104377|2016-07-01|2016-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137341","name":"Ramaco Resources Inc"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"2017-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0137341|2017-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0146035","name":"Ramaco Resources Land Holdings, LLC"},"object":{"type":"mine","id":"4406762","name":"Kennedy #3"},"validFrom":"2022-03-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0146035|2022-03-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0104377","name":"Michael D Bauersachs"},"object":{"type":"operator","id":"0146035","name":"Ramaco Resources Land Holdings, LLC"},"validFrom":"2022-03-30","validTo":"2016-12-31","current":false,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0146035|2022-03-30|0104377|2016-07-01|18208"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137341","name":"Ramaco Resources Inc"},"object":{"type":"operator","id":"0146035","name":"Ramaco Resources Land Holdings, LLC"},"validFrom":"2022-03-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"4406762","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406762|0146035|2022-03-30|0137341|2017-01-01|27735"}}],"coverage":{"historyRecords":6,"edgeCount":14,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4406762","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"}}