# Relationship history for MSHA mine 4105868

Current hierarchy: **Shawn  Poynor; Clay  Butler; Casey  Poynor → BP Surface Solutions LLC → I54R**

- 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:** Casey  Poynor et al → I54R; 2016-06-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BP Surface Solutions LLC → I54R; 2026-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Casey  Poynor et al → BP Surface Solutions LLC; 2026-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clay  Butler et al → BP Surface Solutions LLC; 2026-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shawn  Poynor et al → BP Surface Solutions LLC; 2026-04-09 to current/open; source msha-controller-operator-history