# Relationship history for MSHA mine 3602055

Current hierarchy: **Lucas Jerry Jr & Sr → R & L Coal Company → Buck Slope**

- 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:** A D & G Coal Company → Buck Slope; 1950-01-01 to 1981-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Gonzalo Anthony → Buck Slope; 1950-01-01 to 1981-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Gonzalo Anthony → A D & G Coal Company; 1950-01-01 to 1981-09-15; source msha-controller-operator-history
- **operator_operates_mine:** R & L Coal Company → Buck Slope; 1981-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lucas Jerry Jr & Sr → Buck Slope; 1981-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lucas Jerry Jr & Sr → R & L Coal Company; 1981-09-16 to current/open; source msha-controller-operator-history