# Relationship history for MSHA mine 1518593

Current hierarchy: **Randy  Gilkerson → Ember Contracting Inc → No 12**

- 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:** Randy  Gilkerson et al → No 12; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brent  Coleman et al → No 12; 1999-06-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Emily Enterprises Inc. → No 12; 2002-12-04 to 2003-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Coleman et al → Emily Enterprises Inc.; 2002-12-04 to 2003-02-11; source msha-controller-operator-history
- **controller_controls_mine:** James R  Mitchell et al → No 12; 2002-12-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** MiTac Mining Company LLC → No 12; 2003-02-12 to 2007-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Jimmy W  Tackett et al → No 12; 2003-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy W  Tackett et al → MiTac Mining Company LLC; 2003-02-12 to 2007-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Coal Ridge Mining LLC → No 12; 2007-03-08 to 2007-12-13; source msha-controller-operator-history
- **controller_controls_operator:** James R  Mitchell et al → Coal Ridge Mining LLC; 2007-03-08 to 2007-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Douglas K  Tackett et al → Coal Ridge Mining LLC; 2007-03-08 to 2007-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Clyde D  Fields → No 12; 2007-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Up & Running Coal Company, Inc. → No 12; 2007-12-14 to 2008-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Clyde D  Fields → Up & Running Coal Company, Inc.; 2007-12-14 to 2008-09-22; source msha-controller-operator-history
- **operator_operates_mine:** Ember Contracting Inc → No 12; 2008-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Gilkerson et al → Ember Contracting Inc; 2008-09-23 to current/open; source msha-controller-operator-history