# Relationship history for MSHA mine 0503973

Current hierarchy: **Stephanie  Tunstall; Kenneth  Tunstall → Eagle Peaks Mining LLC → Bullger Basin**

- 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

- **operator_operates_mine:** Penn Mountain Mining → Bullger Basin; 1984-07-01 to 2014-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Penn Mountain Mining → Bullger Basin; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Penn Mountain Mining → Penn Mountain Mining; 1984-07-01 to 2014-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Peaks Mining LLC → Bullger Basin; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth  Tunstall et al → Bullger Basin; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Tunstall et al → Eagle Peaks Mining LLC; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephanie  Tunstall et al → Eagle Peaks Mining LLC; 2014-02-19 to current/open; source msha-controller-operator-history