# Relationship history for MSHA mine 4609213

Current hierarchy: **Kenneth R  Calloway → Chief Mining, Inc. → No. 3**

- 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:** Robert L  Worley → No. 3; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Calloway Kevin B → No. 3; 1995-08-01 to 2003-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → No. 3; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Calloway → No. 3; 2003-11-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Run Mining Company LLC → No. 3; 2007-05-03 to 2011-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Brooks Run Mining Company LLC; 2007-05-03 to 2011-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Baylor Mining, Inc. → No. 3; 2011-06-16 to 2013-08-06; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Worley → Baylor Mining, Inc.; 2011-06-16 to 2013-08-06; source msha-controller-operator-history
- **operator_operates_mine:** Chief Mining, Inc. → No. 3; 2013-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Calloway → Chief Mining, Inc.; 2013-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calloway Kevin B → Chief Mining, Inc.; 2013-08-07 to 2003-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → No. 3; 2016-07-26 to 2017-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Brooks Run Mining Company LLC; 2016-07-26 to 2011-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Pristine Clean Energy LLC → No. 3; 2017-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pristine Clean Energy LLC → Brooks Run Mining Company LLC; 2017-10-05 to 2011-06-15; source msha-controller-operator-history