# Relationship history for MSHA mine 4003102

Current hierarchy: **Horizon Natural Resources Incorporated → Tennessee Mining Inc → Fork Mountain**

- 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:** Horizon Natural Resources Incorporated → Fork Mountain; 1995-11-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Mining Inc → Fork Mountain; 1996-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Tennessee Mining Inc; 1996-12-01 to current/open; source msha-controller-operator-history