# Relationship history for MSHA mine 0202471

Current hierarchy: **Joy T  Pearce Jr → Joy T Pearce Construction Inc → Pearce Cinder Pit**

- 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

- **controller_controls_mine:** Joy T  Pearce Jr → Pearce Cinder Pit; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Joy T Pearce Construction Inc → Pearce Cinder Pit; 1988-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joy T  Pearce Jr → Joy T Pearce Construction Inc; 1988-12-01 to current/open; source msha-controller-operator-history