# Relationship history for MSHA mine 1517793

Current hierarchy: **Horizon Natural Resources Incorporated → Horizon Natural Resources Mining Inc → 17 South**

- 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 → 17 South; 1986-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Addington Mining Inc → 17 South; 1996-05-01 to 2001-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Addington Mining Inc; 1996-05-01 to 2001-06-12; source msha-controller-operator-history
- **controller_controls_mine:** John C  Smith Jr → 17 South; 2001-03-19 to 2006-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Fuels LLC → 17 South; 2001-06-13 to 2004-03-24; source msha-controller-operator-history
- **controller_controls_operator:** John C  Smith Jr → Appalachian Fuels LLC; 2001-06-13 to 2004-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → 17 South; 2002-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Horizon Natural Resources Mining Inc → 17 South; 2004-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Horizon Natural Resources Mining Inc; 2004-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → 17 South; 2006-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Coal Resources Inc → Appalachian Fuels LLC; 2006-01-17 to 2004-03-24; source msha-controller-operator-history