# Relationship history for MSHA mine 4406003

Current hierarchy: **Jerry W  Maggard → Shirl Coal Inc → No 1 Mine**

- 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:** Lescox Coal Company Inc → No 1 Mine; 1983-06-01 to 1986-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Mack  Lester → No 1 Mine; 1983-06-01 to 1988-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Mack  Lester → Lescox Coal Company Inc; 1983-06-01 to 1986-05-12; source msha-controller-operator-history
- **operator_operates_mine:** Shirl Coal Inc → No 1 Mine; 1986-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Maggard → No 1 Mine; 1986-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Maggard → Shirl Coal Inc; 1986-05-13 to current/open; source msha-controller-operator-history