# Relationship history for MSHA mine 1500365

Current hierarchy: **Steve  Rickmeier → Bowie Refined Coal, LLC → Estill Co.**

- 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:** South-East Coal Company Inc → Estill Co.; 1950-01-01 to 1993-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Harry  LaViers Jr → Estill Co.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harry  LaViers Jr → South-East Coal Company Inc; 1950-01-01 to 1993-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Donald G  LaViers → Estill Co.; 1993-03-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dlx Inc → Estill Co.; 1993-04-07 to 1994-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Donald G  LaViers → Dlx Inc; 1993-04-07 to 1994-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Processing Company → Estill Co.; 1994-03-31 to 1995-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Florida Progress Corp et al → Estill Co.; 1994-03-31 to 1995-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Florida Progress Corp et al → Kentucky Processing Company; 1994-03-31 to 1995-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Processing Company → Estill Co.; 1995-10-16 to 2010-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Yates → Estill Co.; 1995-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Yates → Kentucky Processing Company; 1995-10-16 to 2010-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Fuel Recovery Partners, LLC → Estill Co.; 2010-05-14 to 2013-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Jocelyn  Westermann → Estill Co.; 2010-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jocelyn  Westermann → Fuel Recovery Partners, LLC; 2010-05-14 to 2013-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Bowie Refined Coal, LLC → Estill Co.; 2013-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Rickmeier et al → Estill Co.; 2013-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Rickmeier et al → Bowie Refined Coal, LLC; 2013-05-30 to current/open; source msha-controller-operator-history