# Relationship history for MSHA mine 4608023

Current hierarchy: **Joseph C  Turley III → Leckie Smokeless Coal Company → Joe'S Knob Surface Mine No 109**

- 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

- **controller_controls_mine:** Joseph C  Turley III et al → Joe'S Knob Surface Mine No 109; 1987-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael T  McCullough → Joe'S Knob Surface Mine No 109; 1988-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & M Augering Inc → Joe'S Knob Surface Mine No 109; 1991-04-01 to 1991-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  McCullough → M & M Augering Inc; 1991-04-01 to 1991-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Leckie Smokeless Coal Company → Joe'S Knob Surface Mine No 109; 1991-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph C  Turley III et al → Leckie Smokeless Coal Company; 1991-10-15 to current/open; source msha-controller-operator-history