{"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":"2026-10-17T05:35:58.500035+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":"4606500","name":"8-C Mine"},"operator":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"controller":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05134","name":"Reading & Bates Corp"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1977-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C05134|1977-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06953","name":"Belva Coal Company Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1982-03-01","validTo":"1982-09-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P06953|1982-03-01|1982-09-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05134","name":"Reading & Bates Corp"},"object":{"type":"operator","id":"P06953","name":"Belva Coal Company Inc"},"validFrom":"1982-03-01","validTo":"1982-09-12","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P06953|1982-03-01|C05134|1977-02-01|67637"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13810","name":"Char-Lynn Coal Company Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1982-09-13","validTo":"1984-10-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P13810|1982-09-13|1984-10-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09186","name":"Ralph  Meade"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1982-09-13","validTo":"1984-10-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C09186|1982-09-13|1984-10-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09186","name":"Ralph  Meade"},"object":{"type":"operator","id":"P13810","name":"Char-Lynn Coal Company Inc"},"validFrom":"1982-09-13","validTo":"1984-10-01","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P13810|1982-09-13|C09186|1982-09-13|79068"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06953","name":"Belva Coal Company Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1984-10-02","validTo":"1989-08-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P06953|1984-10-02|1989-08-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05134","name":"Reading & Bates Corp"},"object":{"type":"operator","id":"P06953","name":"Belva Coal Company Inc"},"validFrom":"1984-10-02","validTo":"1989-08-17","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P06953|1984-10-02|C05134|1977-02-01|67638"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12833","name":"Dean  Francis"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1987-01-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C12833|1987-01-21|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20740","name":"T & J Coal Company Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1989-08-18","validTo":"1991-04-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P20740|1989-08-18|1991-04-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13837","name":"James A  Miller"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1989-08-18","validTo":"1991-04-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C13837|1989-08-18|1991-04-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13837","name":"James A  Miller"},"object":{"type":"operator","id":"P20740","name":"T & J Coal Company Inc"},"validFrom":"1989-08-18","validTo":"1991-04-21","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P20740|1989-08-18|C13837|1989-08-18|91295"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1990-09-01","validTo":"2011-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C02508|1990-09-01|2011-05-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21477","name":"R & S Energy Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1991-04-22","validTo":"1997-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21477|1991-04-22|1997-04-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14406","name":"Roger  Sexton"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1991-04-22","validTo":"1997-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C14406|1991-04-22|1997-04-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14406","name":"Roger  Sexton"},"object":{"type":"operator","id":"P21477","name":"R & S Energy Inc"},"validFrom":"1991-04-22","validTo":"1997-04-29","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21477|1991-04-22|C14406|1991-04-22|92733"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15456","name":"Charles Steven  Robinson"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1996-06-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C15456|1996-06-20|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18411","name":"A & A Francis Energy Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1997-04-30","validTo":"1998-06-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P18411|1997-04-30|1998-06-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12833","name":"Dean  Francis"},"object":{"type":"operator","id":"P18411","name":"A & A Francis Energy Inc"},"validFrom":"1997-04-30","validTo":"1998-06-29","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P18411|1997-04-30|C12833|1987-01-21|88011"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23519","name":"Belva Coal Company"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1998-06-30","validTo":"1999-02-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P23519|1998-06-30|1999-02-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15456","name":"Charles Steven  Robinson"},"object":{"type":"operator","id":"P23519","name":"Belva Coal Company"},"validFrom":"1998-06-30","validTo":"1999-02-22","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P23519|1998-06-30|C15456|1996-06-20|95713"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24092","name":"Madison Creek Llc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1999-02-23","validTo":"2003-06-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24092|1999-02-23|2003-06-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15793","name":"Michael L  White"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"1999-02-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C15793|1999-02-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15793","name":"Michael L  White"},"object":{"type":"operator","id":"P24092","name":"Madison Creek Llc"},"validFrom":"1999-02-23","validTo":"2003-06-08","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24092|1999-02-23|C15793|1999-02-23|96788"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15927","name":"Douglas M  Epling et al"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2000-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C15927|2000-03-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03666","name":"Ronald G  Goff"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2000-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C03666|2000-05-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15793","name":"Michael L  White"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2002-01-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|C15793|2002-01-25|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050196","name":"White's Mining, L.L.C."},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2003-06-09","validTo":"2005-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|0050196|2003-06-09|2005-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15793","name":"Michael L  White"},"object":{"type":"operator","id":"0050196","name":"White's Mining, L.L.C."},"validFrom":"2003-06-09","validTo":"2005-06-30","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|0050196|2003-06-09|C15793|2002-01-25|96790"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24399","name":"Rama Development Co., Inc."},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2005-07-01","validTo":"2005-10-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24399|2005-07-01|2005-10-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03666","name":"Ronald G  Goff"},"object":{"type":"operator","id":"P24399","name":"Rama Development Co., Inc."},"validFrom":"2005-07-01","validTo":"2005-10-12","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24399|2005-07-01|C03666|2000-05-01|63526"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24400","name":"Hanover Resources LLC"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2005-10-13","validTo":"2008-05-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24400|2005-10-13|2008-05-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15927","name":"Douglas M  Epling et al"},"object":{"type":"operator","id":"P24400","name":"Hanover Resources LLC"},"validFrom":"2005-10-13","validTo":"2008-05-07","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P24400|2005-10-13|C15927|2000-03-01|97652"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2008-05-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21118|2008-05-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"validFrom":"2008-05-08","validTo":"2011-05-31","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21118|2008-05-08|C02508|1990-09-01|59264"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2011-06-01","validTo":"2016-07-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|0041211|2011-06-01|2016-07-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"validFrom":"2011-06-01","validTo":"2016-07-25","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21118|2008-05-08|0041211|2011-06-01|2012"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0127923","name":"Alpha Natural Resources Holdings, Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2016-07-26","validTo":"2018-11-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|0127923|2016-07-26|2018-11-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0127923","name":"Alpha Natural Resources Holdings, Inc"},"object":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"validFrom":"2016-07-26","validTo":"2018-11-08","current":false,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21118|2008-05-08|0127923|2016-07-26|25162"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"object":{"type":"mine","id":"4606500","name":"8-C Mine"},"validFrom":"2018-11-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|0127321|2018-11-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"object":{"type":"operator","id":"P21118","name":"Aracoma Coal Inc"},"validFrom":"2018-11-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"4606500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606500|P21118|2008-05-08|0127321|2018-11-09|24797"}}],"coverage":{"historyRecords":15,"edgeCount":41,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4606500","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}