# Relationship history for MSHA mine 3800344

Current hierarchy: **Michael N  Graham; Kenneth  Graham → G & G Mining Co  LLC → G & G Mining Co  LLC**

- 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 & C Construction Company → G & G Mining Co  LLC; 1950-01-01 to 1997-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Walden B  Graham → G & G Mining Co  LLC; 1950-01-01 to 1997-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Walden B  Graham → G & C Construction Company; 1950-01-01 to 1997-03-12; source msha-controller-operator-history
- **operator_operates_mine:** G & G Mining Co  LLC → G & G Mining Co  LLC; 1997-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael N  Graham  et al → G & G Mining Co  LLC; 1997-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael N  Graham  et al → G & G Mining Co  LLC; 1997-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Graham  et al → G & G Mining Co  LLC; 1997-03-13 to current/open; source msha-controller-operator-history