# Relationship history for MSHA mine 0300464

Current hierarchy: **United States Lime & Minerals Inc → Arkansas Lime Company → LIMEDALE PLANT**

- 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:** Arkansas Lime Company → LIMEDALE PLANT; 1950-01-01 to 1989-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Rangaire Corp → LIMEDALE PLANT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rangaire Corp → Arkansas Lime Company; 1950-01-01 to 1989-08-19; source msha-controller-operator-history
- **operator_operates_mine:** Arkansas Lime Company → LIMEDALE PLANT; 1989-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United States Lime & Minerals Inc → LIMEDALE PLANT; 1989-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United States Lime & Minerals Inc → Arkansas Lime Company; 1989-08-20 to current/open; source msha-controller-operator-history