# Relationship history for MSHA mine 4407184

Current hierarchy: **Horace Garrison  Hill → Hill's Fuel Company → Prep Plant #1**

- 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:** Jerry W  Wharton → Prep Plant #1; 1990-09-01 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Hill's Fuel Company → Prep Plant #1; 2006-08-21 to 2006-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Horace Garrison  Hill → Prep Plant #1; 2006-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horace Garrison  Hill → Hill's Fuel Company; 2006-08-21 to 2006-10-10; source msha-controller-operator-history
- **operator_operates_mine:** A & G Coal Corporation → Prep Plant #1; 2006-10-11 to 2008-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Wharton → A & G Coal Corporation; 2006-10-11 to 2008-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Hill's Fuel Company → Prep Plant #1; 2008-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horace Garrison  Hill → Hill's Fuel Company; 2008-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → Prep Plant #1; 2009-04-30 to 2017-03-26; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → A & G Coal Corporation; 2009-04-30 to 2008-06-08; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice lll et al → Prep Plant #1; 2017-03-27 to 2022-10-02; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice lll et al → A & G Coal Corporation; 2017-03-27 to 2008-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Jillean L  Justice et al → A & G Coal Corporation; 2017-03-27 to 2008-06-08; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice III → Prep Plant #1; 2022-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice III → A & G Coal Corporation; 2022-10-03 to 2008-06-08; source msha-controller-operator-history