# Relationship history for MSHA mine 1512792

Current hierarchy: **Donald G  LaViers → Red Fox Coal Company Inc → Wolfpen Branch**

- 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:** Donald G  LaViers → Wolfpen Branch; 1975-03-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Red Fox Coal Company Inc → Wolfpen Branch; 1981-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald G  LaViers → Red Fox Coal Company Inc; 1981-03-01 to current/open; source msha-controller-operator-history