# Relationship history for MSHA mine 4002314

Current hierarchy: **Nash W Paul → Universal Coal Company Inc → No 10**

- 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:** Phillips Bob H & W Paul Nash → No 10; 1975-11-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Putnam County Coal Company Ltd → No 10; 1977-09-01 to 1980-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Bob H & W Paul Nash → Putnam County Coal Company Ltd; 1977-09-01 to 1980-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Nash W Paul → No 10; 1980-11-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Universal Coal Company Inc → No 10; 1980-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nash W Paul → Universal Coal Company Inc; 1980-11-20 to current/open; source msha-controller-operator-history