# Relationship history for MSHA mine 4002811

Current hierarchy: **Hill James V → Debra Lee Mines Inc → #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:** Chris Coal Company Inc → #1; 1982-11-01 to 1984-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Roger E  West → #1; 1982-11-01 to 1984-10-26; source msha-controller-operator-history
- **controller_controls_operator:** Roger E  West → Chris Coal Company Inc; 1982-11-01 to 1984-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Leon G & Rebecca → #1; 1984-10-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Becca Ann Coal Company → #1; 1984-10-27 to 1986-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Leon G & Rebecca → Becca Ann Coal Company; 1984-10-27 to 1986-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Debra Lee Mines Inc → #1; 1986-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hill James V → #1; 1986-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hill James V → Debra Lee Mines Inc; 1986-06-02 to current/open; source msha-controller-operator-history