# Relationship history for MSHA mine 4608625

Current hierarchy: **Alpha Metallurgical Resources Inc → Kingston Mining, Inc. → Kingston No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Brock Mining Inc → Kingston No 1; 1992-09-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brock Mining Inc → Kingston No 1; 1997-03-01 to 1997-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Brock Mining Inc → Brock Mining Inc; 1997-03-01 to 1997-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Kingston Mining, Inc. → Kingston No 1; 1997-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rag Aktiengesellschaft → Kingston No 1; 1997-09-27 to 2004-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Rag Aktiengesellschaft → Kingston Mining, Inc.; 1997-09-27 to 2004-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Foundation Coal Corporation → Kingston No 1; 2004-07-30 to 2009-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Foundation Coal Corporation → Kingston Mining, Inc.; 2004-07-30 to 2009-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Kingston No 1; 2009-07-31 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Kingston Mining, Inc.; 2009-07-31 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Kingston No 1; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Kingston Mining, Inc.; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Kingston No 1; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Kingston Mining, Inc.; 2018-11-09 to current/open; source msha-controller-operator-history