# Relationship history for MSHA mine 1500827

Current hierarchy: **Harry  LaViers Jr → South-East Coal Company Inc → Mine #401**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Harry  LaViers Jr → Mine #401; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Verlin Bailey Coal Company → Mine #401; 1950-01-01 to 1974-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Verlin Coal Company → Mine #401; 1950-01-01 to 1974-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Verlin Coal Company → Verlin Bailey Coal Company; 1950-01-01 to 1974-02-11; source msha-controller-operator-history
- **operator_operates_mine:** South-East Coal Company Inc → Mine #401; 1974-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harry  LaViers Jr → South-East Coal Company Inc; 1974-02-12 to current/open; source msha-controller-operator-history