# Relationship history for MSHA mine 1508976

Current hierarchy: **Donald G  LaViers → Dlx Inc → Mine 404**

- 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

- **controller_controls_mine:** Harry  LaViers Jr → Mine 404; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South-East Coal Company Inc → Mine 404; 1975-10-29 to 1993-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Harry  LaViers Jr → South-East Coal Company Inc; 1975-10-29 to 1993-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Dlx Inc → Mine 404; 1993-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald G  LaViers → Mine 404; 1993-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald G  LaViers → Dlx Inc; 1993-03-29 to current/open; source msha-controller-operator-history