# Relationship history for MSHA mine 1518008

Current hierarchy: **J Mark  Campbell → Premier Elkhorn Coal Company → PE 2 Underground**

- 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 → PE 2 Underground; 1991-12-02 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Gilkerson et al → PE 2 Underground; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Fought → PE 2 Underground; 1992-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harold E  Akers et al → PE 2 Underground; 1993-12-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Akers Mining Llc → PE 2 Underground; 1997-12-01 to 1999-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Harold E  Akers et al → South Akers Mining Llc; 1997-12-01 to 1999-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Jim D  Akers et al → South Akers Mining Llc; 1997-12-01 to 1999-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Garrett Mining Inc → PE 2 Underground; 1999-10-04 to 2000-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Fought → Garrett Mining Inc; 1999-10-04 to 2000-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Don  Robertson → PE 2 Underground; 2000-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy P  Smith → PE 2 Underground; 2000-12-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ember Contracting Inc → PE 2 Underground; 2000-12-28 to 2001-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Gilkerson et al → Ember Contracting Inc; 2000-12-28 to 2001-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Westenn Inc → PE 2 Underground; 2001-07-20 to 2002-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Don  Robertson → Westenn Inc; 2001-07-20 to 2002-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Norman → PE 2 Underground; 2001-10-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J L N Construction Co. → PE 2 Underground; 2002-02-12 to 2002-08-26; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Norman → J L N Construction Co.; 2002-02-12 to 2002-08-26; source msha-controller-operator-history
- **operator_operates_mine:** American Mining & Manufacturing Corporation → PE 2 Underground; 2002-08-27 to 2004-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Timothy P  Smith → American Mining & Manufacturing Corporation; 2002-08-27 to 2004-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Premier Elkhorn Coal Company → PE 2 Underground; 2004-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Premier Elkhorn Coal Company; 2004-01-16 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → PE 2 Underground; 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 2019-06-15; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → PE 2 Underground; 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 current/open; source msha-controller-operator-history