# Relationship history for MSHA mine 3401196

Current hierarchy: **Porter J F Jr → Garland Coal & Mining Company → Rosehill #11**

- 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:** Porter J F Jr → Rosehill #11; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Garland Coal & Mining Company → Rosehill #11; 1979-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Porter J F Jr → Garland Coal & Mining Company; 1979-04-01 to current/open; source msha-controller-operator-history