# Relationship history for MSHA mine 2003209

Current hierarchy: **Robert G  Eisenhardt → R G E Aggregate Inc → RAYMOND 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:** R G E Aggregate Inc → RAYMOND PIT; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Eisenhardt → RAYMOND PIT; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Eisenhardt → R G E Aggregate Inc; 2001-06-01 to current/open; source msha-controller-operator-history