# Relationship history for MSHA mine 1518080

Current hierarchy: **Phoenix Coal Corporation → Phoenix Coal Processing Company LLC → Stoney Point Mine**

- 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

- **controller_controls_mine:** Kenneth O  Taylor Jr → Stoney Point Mine; 1996-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** No 1 Contractor Inc → Stoney Point Mine; 1998-08-01 to 2007-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth O  Taylor Jr → No 1 Contractor Inc; 1998-08-01 to 2007-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Phoenix Coal Corporation → Stoney Point Mine; 2006-12-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Phoenix Coal Processing Company LLC → Stoney Point Mine; 2007-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phoenix Coal Corporation → Phoenix Coal Processing Company LLC; 2007-03-27 to current/open; source msha-controller-operator-history