# Relationship history for MSHA mine 4002831

Current hierarchy: **Fletcher Marvin H Jr → G & G Coal Company Inc → No 1**

- 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:** G & G Coal Company Inc → No 1; 1983-06-01 to 1984-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Gene → No 1; 1983-06-01 to 1984-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Gene → G & G Coal Company Inc; 1983-06-01 to 1984-03-14; source msha-controller-operator-history
- **operator_operates_mine:** G & G Coal Company Inc → No 1; 1984-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fletcher Marvin H Jr → No 1; 1984-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fletcher Marvin H Jr → G & G Coal Company Inc; 1984-03-15 to current/open; source msha-controller-operator-history