# Relationship history for MSHA mine 4103765

Current hierarchy: **James A  Powell Jr → Blazer Construction Inc → #6430**

- 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:** Blazer Construction Inc → #6430; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Powell Jr → #6430; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Powell Jr → Blazer Construction Inc; 1993-04-01 to current/open; source msha-controller-operator-history