# Relationship history for MSHA mine 4605024

Current hierarchy: **William  Smith; Homer  Hopkins → H & S Coal Company → No 3**

- 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:** William  Smith et al → No 3; 1975-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Justice Rayburn & Willard Coleman → No 3; 1975-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & C Coal Corp → No 3; 1976-01-12 to 1976-12-15; source msha-controller-operator-history
- **controller_controls_operator:** Justice Rayburn & Willard Coleman → J & C Coal Corp; 1976-01-12 to 1976-12-15; source msha-controller-operator-history
- **operator_operates_mine:** H & S Coal Company → No 3; 1976-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Smith et al → H & S Coal Company; 1976-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Homer  Hopkins et al → H & S Coal Company; 1976-12-16 to current/open; source msha-controller-operator-history