# Relationship history for MSHA mine 1519327

Current hierarchy: **Joshua  Clark → Clark Mining, Inc → Mine #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 #2; 1991-12-02 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Willis  Ring → Mine #2; 2004-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joshua  Clark → Mine #2; 2008-08-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Premier Elkhorn Coal Company → Mine #2; 2008-10-07 to 2008-11-05; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Premier Elkhorn Coal Company; 2008-10-07 to 2008-11-05; source msha-controller-operator-history
- **operator_operates_mine:** R & R Mining Inc → Mine #2; 2008-11-06 to 2010-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Willis  Ring → R & R Mining Inc; 2008-11-06 to 2010-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Premier Elkhorn Coal Company → Mine #2; 2010-01-08 to 2010-11-15; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Premier Elkhorn Coal Company; 2010-01-08 to 2010-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Clark Mining, Inc → Mine #2; 2010-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua  Clark → Clark Mining, Inc; 2010-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → Mine #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 2008-11-05; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Premier Elkhorn Coal Company; 2015-09-21 to 2010-11-15; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → Mine #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 2008-11-05; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → Premier Elkhorn Coal Company; 2019-06-16 to 2010-11-15; source msha-controller-operator-history