# Relationship history for MSHA mine 4202524

Current hierarchy: **Terry R  Seiter → Eaglerock Landscape & Design → Gravel 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

- **operator_operates_mine:** Eaglerock Landscape & Design → Gravel Pit; 2009-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry R  Seiter → Gravel Pit; 2009-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry R  Seiter → Eaglerock Landscape & Design; 2009-04-23 to current/open; source msha-controller-operator-history