# Relationship history for MSHA mine 1518830

Current hierarchy: **Phoenix Coal Corporation → Crittenden County Coal Company Inc → Tex Mine #1**

- 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

- **operator_operates_mine:** Crittenden County Coal Company Inc → Tex Mine #1; 2004-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth O  Taylor Jr → Tex Mine #1; 2004-12-15 to 2006-08-13; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth O  Taylor Jr → Crittenden County Coal Company Inc; 2004-12-15 to 2006-08-13; source msha-controller-operator-history
- **controller_controls_mine:** Phoenix Coal Corporation → Tex Mine #1; 2006-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phoenix Coal Corporation → Crittenden County Coal Company Inc; 2006-08-14 to current/open; source msha-controller-operator-history