# Relationship history for MSHA mine 4702204

Current hierarchy: **James F  Melvin → Francis Melvin Inc → Neuman 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

- **controller_controls_mine:** James F  Melvin → Neuman Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buehler Excavating Inc → Neuman Pit; 1950-01-01 to 1997-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Armin  Buehler → Neuman Pit; 1950-01-01 to 1997-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Armin  Buehler → Buehler Excavating Inc; 1950-01-01 to 1997-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Francis Melvin Inc → Neuman Pit; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James F  Melvin → Francis Melvin Inc; 1997-05-01 to current/open; source msha-controller-operator-history