# Relationship history for MSHA mine 1517838

Current hierarchy: **Energy Coal Resources Inc → Appalachian Fuels LLC → Ball Creek Surface Mine  # 28**

- 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:** Greg  Wells → Ball Creek Surface Mine  # 28; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Ball Creek Surface Mine  # 28; 1996-09-01 to 1998-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Wells → Leslie Resources Inc; 1996-09-01 to 1998-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Ball Creek Surface Mine  # 28; 1998-03-09 to 2001-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Ball Creek Surface Mine  # 28; 1998-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Leslie Resources Inc; 1998-03-09 to 2001-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Fuels Llc → Ball Creek Surface Mine  # 28; 2001-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John C  Smith Jr → Ball Creek Surface Mine  # 28; 2001-03-19 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_operator:** John C  Smith Jr → Appalachian Fuels Llc; 2001-03-19 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → Ball Creek Surface Mine  # 28; 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 current/open; source msha-controller-operator-history