# Relationship history for MSHA mine 1519509

Current hierarchy: **James H  Booth → Coalburg Enterprises Inc → NO 7**

- 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 H  Booth et al → NO 7; 1984-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coalburg Enterprises Inc → NO 7; 2010-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Coalburg Enterprises Inc; 2010-06-24 to current/open; source msha-controller-operator-history