# Relationship history for MSHA mine 2300143

Current hierarchy: **Douglas E  Kelly; Theresa D  Kelley → Kelly Lime & Rock Company Inc → Kelly Mine And Mill**

- 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:** Kelly Lime & Rock Company Inc → Kelly Mine And Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Douglas E  Kelly et al → Kelly Mine And Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas E  Kelly et al → Kelly Lime & Rock Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theresa D  Kelley et al → Kelly Lime & Rock Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history