# Relationship history for MSHA mine 3503730

Current hierarchy: **Howard W  Wright; Jeffrey K  Wright → Wright Gold → Wright Gold**

- 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:** Wright Gold → Wright Gold; 2010-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Howard W  Wright et al → Wright Gold; 2010-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howard W  Wright et al → Wright Gold; 2010-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey K  Wright et al → Wright Gold; 2010-01-10 to current/open; source msha-controller-operator-history