# Relationship history for MSHA mine 3102193

Current hierarchy: **Ford H  Glenn → Glenn Forest Products Inc → Broad River 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

- **operator_operates_mine:** Glenn Forest Products Inc → Broad River Mine; 2003-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ford H  Glenn → Broad River Mine; 2003-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ford H  Glenn → Glenn Forest Products Inc; 2003-06-01 to current/open; source msha-controller-operator-history