# Relationship history for MSHA mine 1516599

Current hierarchy: **Alpha Metallurgical Resources Inc → Road Fork Development Company Inc → Burnwell Energy**

- 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:** Salmons Carlos → Burnwell Energy; 1980-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sharon  Preece et al → Burnwell Energy; 1986-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Company → Burnwell Energy; 1989-04-01 to 1990-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Salmons Carlos → C & R Coal Company; 1989-04-01 to 1990-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Preece Energy Inc → Burnwell Energy; 1990-05-30 to 1993-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Sharon  Preece et al → Preece Energy Inc; 1990-05-30 to 1993-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Dwight D  McCoy → Burnwell Energy; 1992-12-21 to 1994-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Burnwell Energy; 1993-01-01 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Carbon Processors Inc → Burnwell Energy; 1993-07-27 to 1994-01-27; source msha-controller-operator-history
- **controller_controls_operator:** Dwight D  McCoy → Carbon Processors Inc; 1993-07-27 to 1994-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Road Fork Development Company Inc → Burnwell Energy; 1994-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Road Fork Development Company Inc; 1994-01-28 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Burnwell Energy; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Road Fork Development Company Inc; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Burnwell Energy; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Road Fork Development Company Inc; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Burnwell Energy; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Road Fork Development Company Inc; 2018-11-09 to current/open; source msha-controller-operator-history