# Relationship history for MSHA mine 3608818

Current hierarchy: **George J  Evans; Brian K  Evans → Evans Flagstone → P.N.M. MINE**

- 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:** Evans Flagstone → P.N.M. MINE; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian K  Evans  et al → P.N.M. MINE; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian K  Evans  et al → Evans Flagstone; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George J  Evans  et al → Evans Flagstone; 1999-10-01 to current/open; source msha-controller-operator-history