# Relationship history for MSHA mine 3608698

Current hierarchy: **George  Manhart; Raymond  Reindehl → Primrose Coal Company No 2 → Buck Mountain Vein Slope**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Primrose Coal Company No 2 → Buck Mountain Vein Slope; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Raymond  Reindehl et al → Buck Mountain Vein Slope; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond  Reindehl et al → Primrose Coal Company No 2; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Manhart et al → Primrose Coal Company No 2; 1997-10-01 to current/open; source msha-controller-operator-history