# Relationship history for MSHA mine 1518892

Current hierarchy: **Rondall  Reed → Ranger Contracting → Mine No. 2**

- 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:** TECO Energy Inc → Mine No. 2; 1991-12-02 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Harold E  Akers et al → Mine No. 2; 1993-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rondall  Reed → Mine No. 2; 2001-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Akers Mining, LLC → Mine No. 2; 2005-06-28 to 2012-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Harold E  Akers et al → South Akers Mining, LLC; 2005-06-28 to 2012-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Jim D  Akers et al → South Akers Mining, LLC; 2005-06-28 to 2012-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Premier Elkhorn Coal Company → Mine No. 2; 2012-08-06 to 2013-07-17; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Premier Elkhorn Coal Company; 2012-08-06 to 2013-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Ranger Contracting → Mine No. 2; 2013-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rondall  Reed → Ranger Contracting; 2013-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → Mine No. 2; 2015-09-21 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Premier Elkhorn Coal Company; 2015-09-21 to 2013-07-17; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → Mine No. 2; 2019-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → Premier Elkhorn Coal Company; 2019-06-16 to 2013-07-17; source msha-controller-operator-history