# Relationship history for MSHA mine 4606424

Current hierarchy: **Wilson Amos → Huff Inc → No 5 Mine**

- 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:** Brown Charles E → No 5 Mine; 1980-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mackline Coal Company Inc → No 5 Mine; 1981-10-01 to 1983-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Brown Charles E → Mackline Coal Company Inc; 1981-10-01 to 1983-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Wilson Amos → No 5 Mine; 1983-07-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shady Spring Coal Company Inc → No 5 Mine; 1983-07-24 to 1984-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Richmond David D → No 5 Mine; 1983-07-24 to 1984-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Richmond David D → Shady Spring Coal Company Inc; 1983-07-24 to 1984-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Huff Inc → No 5 Mine; 1984-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilson Amos → Huff Inc; 1984-08-10 to current/open; source msha-controller-operator-history