# Relationship history for MSHA mine 4405706

Current hierarchy: **Wesley D.  Burke → Southland Enterprises Inc → No 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:** Sylvia Ann Coal Company Inc → No 1; 1981-07-01 to 1982-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Elkins William R-Hursel H Et Al → No 1; 1981-07-01 to 1982-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Elkins William R-Hursel H Et Al → Sylvia Ann Coal Company Inc; 1981-07-01 to 1982-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Southland Enterprises Inc → No 1; 1982-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wesley D.  Burke et al → No 1; 1982-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wesley D.  Burke et al → Southland Enterprises Inc; 1982-02-23 to current/open; source msha-controller-operator-history