# Relationship history for MSHA mine 4002925

Current hierarchy: **Meeks David → Jennie Lynn Coal Company → No 59**

- 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:** N B Coal Company → No 59; 1986-06-01 to 1988-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Scissom Nellie R → No 59; 1986-06-01 to 1988-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Scissom Nellie R → N B Coal Company; 1986-06-01 to 1988-09-12; source msha-controller-operator-history
- **operator_operates_mine:** Jennie Lynn Coal Company → No 59; 1988-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Meeks David → No 59; 1988-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Meeks David → Jennie Lynn Coal Company; 1988-09-13 to current/open; source msha-controller-operator-history