# Relationship history for MSHA mine 1517864

Current hierarchy: **William E  Pace Jr → L & A Coal Company → #2**

- 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

- **controller_controls_mine:** William E  Pace Jr → #2; 1994-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L & A Coal Company → #2; 1996-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Pace Jr → L & A Coal Company; 1996-11-01 to current/open; source msha-controller-operator-history