# Relationship history for MSHA mine 3608034

Current hierarchy: **Ricky K Bender; Rick E Bender → Sherman Mountain Coal Company Inc. → Sherman Mountain Coal Strip**

- 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

- **operator_operates_mine:** J & A Coal Company → Sherman Mountain Coal Strip; 1988-08-01 to 2001-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Albert N  Shadle et al → Sherman Mountain Coal Strip; 1988-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert N  Shadle et al → J & A Coal Company; 1988-08-01 to 2001-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Harmon et al → J & A Coal Company; 1988-08-01 to 2001-04-18; source msha-controller-operator-history
- **controller_controls_mine:** William C  Vought → Sherman Mountain Coal Strip; 1994-06-01 to 2020-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Mountaintop Coal Mining Inc → Sherman Mountain Coal Strip; 2001-04-19 to 2020-09-01; source msha-controller-operator-history
- **controller_controls_mine:** William C  Vought → Sherman Mountain Coal Strip; 2001-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William C  Vought → Mountaintop Coal Mining Inc; 2001-04-19 to 2020-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Ricky K Bender et al → Sherman Mountain Coal Strip; 2020-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sherman Mountain Coal Company Inc. → Sherman Mountain Coal Strip; 2020-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricky K Bender et al → Sherman Mountain Coal Company Inc.; 2020-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick E Bender et al → Sherman Mountain Coal Company Inc.; 2020-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William C  Vought → Sherman Mountain Coal Company Inc.; 2020-09-02 to 2020-08-31; source msha-controller-operator-history