# Relationship history for MSHA mine 4405588

Current hierarchy: **Barnette Dennis & James Powers → Dee & Dan Contractors → #1 Strip**

- 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:** Dee & Dan Contractors → #1 Strip; 1981-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barnette Dennis & James Powers → #1 Strip; 1981-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnette Dennis & James Powers → Dee & Dan Contractors; 1981-02-01 to current/open; source msha-controller-operator-history