# Relationship history for MSHA mine 1517767

Current hierarchy: **Rowland  Goble; Charles A  Ratliff → Murriell-Don Coal Company Inc → #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Richard L  Cooper → #2; 1987-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Murriell James Ray → #2; 1994-05-09 to 2003-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Richardson Fuel Inc → #2; 1996-04-01 to 1996-04-25; source msha-controller-operator-history
- **controller_controls_operator:** Richard L  Cooper → Richardson Fuel Inc; 1996-04-01 to 1996-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Bethel Energy Corp → #2; 1996-04-26 to 1998-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Goff → #2; 1996-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Goff → Bethel Energy Corp; 1996-04-26 to 1998-01-26; source msha-controller-operator-history
- **operator_operates_mine:** Murriell-Don Coal Company Inc → #2; 1998-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Murriell James Ray → Murriell-Don Coal Company Inc; 1998-01-27 to 2003-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Charles A  Ratliff et al → #2; 2003-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles A  Ratliff et al → Murriell-Don Coal Company Inc; 2003-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rowland  Goble  et al → Murriell-Don Coal Company Inc; 2003-01-17 to current/open; source msha-controller-operator-history