# Relationship history for MSHA mine 3609651

Current hierarchy: **Kim  Horton → Black Cat Coal, LLC → Clearfield County Strips**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Horton Used Parts & Equipment → Clearfield County Strips; 2008-07-30 to 2010-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Kim  Horton → Clearfield County Strips; 2008-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kim  Horton → Horton Used Parts & Equipment; 2008-07-30 to 2010-01-28; source msha-controller-operator-history
- **operator_operates_mine:** Black Cat Coal, LLC → Clearfield County Strips; 2010-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lloyd  Dahlem et al → Clearfield County Strips; 2010-01-29 to 2013-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Lloyd  Dahlem et al → Black Cat Coal, LLC; 2010-01-29 to 2013-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Kim  Horton et al → Black Cat Coal, LLC; 2010-01-29 to 2013-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Kim  Horton → Clearfield County Strips; 2013-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kim  Horton → Black Cat Coal, LLC; 2013-12-31 to current/open; source msha-controller-operator-history