# Relationship history for MSHA mine 3401428

Current hierarchy: **Race James Q → Ranchers Coal Company Inc → Welch Rail Facility**

- 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:** Ranchers Coal Inc → Welch Rail Facility; 1983-12-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Wiley Marcus A → Welch Rail Facility; 1983-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wiley Marcus A → Ranchers Coal Inc; 1983-12-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Race James Q → Welch Rail Facility; 1985-10-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ranchers Coal Company Inc → Welch Rail Facility; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Race James Q → Ranchers Coal Company Inc; 1986-01-01 to current/open; source msha-controller-operator-history