# Relationship history for MSHA mine 4406648

Current hierarchy: **Gary A  Horn → Raintree Coal Company → No 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

- **operator_operates_mine:** Leah Corp → No 1; 1991-06-01 to 1992-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Arnold → No 1; 1991-06-01 to 1992-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Arnold → Leah Corp; 1991-06-01 to 1992-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Raintree Coal Company → No 1; 1992-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Horn → No 1; 1992-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Horn → Raintree Coal Company; 1992-02-19 to current/open; source msha-controller-operator-history