# Relationship history for MSHA mine 3200835

Current hierarchy: **William J  Maddock; Wesley D  Maddock → Maddock Construction → Plant 1**

- 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:** Maddock Construction → Plant 1; 2008-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William J  Maddock et al → Plant 1; 2008-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William J  Maddock et al → Maddock Construction; 2008-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wesley D  Maddock et al → Maddock Construction; 2008-05-30 to current/open; source msha-controller-operator-history