# Relationship history for MSHA mine 2800993

Current hierarchy: **Vogel Roger → E M E Inc/R W Vogel Inc → RECHARGE RESERVOIR**

- 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:** E M E Inc/R W Vogel Inc → RECHARGE RESERVOIR; 1990-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vogel Roger → RECHARGE RESERVOIR; 1990-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vogel Roger → E M E Inc/R W Vogel Inc; 1990-08-01 to current/open; source msha-controller-operator-history